A coming together of like-minded professionals and companies
Team Pierian consists of two partner companies, Andromeda Systems Inc. and Aspire Consulting. Combining to bring together decades of experience and knowledge in ILS based product support.
We have been delivering advice, guidance, and support through training and consulting to organizations looking to adopt and implement complex specifications and standards to maximize through-life product support.
Andromeda Systems Inc
Andromeda Systems Incorporated (ASI) provides tools and services to assist Physical Asset Owners, Fleet Managers, and Military Program Managers in gaining critical insights into their equipment’s performance, identifying system improvements, optimizing operations & support, making better business decisions, and achieving measurable life-cycle cost savings.
As a leading provider of professional and high technology services and solutions, ASI serves the Department of Defense, U.S. civilian agencies, and private industry. ASI is an ISO 9001:2015 Certified Veteran-Owned Business.
Aspire Consulting
Since its inception in 1996, Aspire Consulting Ltd has been central to the development of the Integrated Logistic Support (ILS) discipline and has developed, applied, and championed a systems approach to ILS and Logistic Support Analysis (LSA). Aspire prides itself on its blend of innovation, pragmatism, and on the thought leadership that it has provided over the last two decades via consultancy, contracts, papers, seminars, and training. Employing its working familiarity with all the major ILS standards – including ASD S-Series, IEC, ISO, SAE, UK Defence Standards (Def Stan) and Joint Service Publications (JSPs) and US Military Standards (Mil-Std) – Aspire has provided consultancy and training services to the Support Engineering community in the Australasia region, the Araba world, Europe, the UK, and the USA, to clients ranging from large Original Equipment Manufacturers [OEMs] to Government Departments to Defence SMEs.
Meet Our Team
Our team has developed a unique set of skills and deep domain know-how.

David Nelson, ASI
David Nelson is a Principal Engineer at ASI, with over 16 years of experience leading and performing Reliability Centered Maintenance (RCM) for multiple projects for the Department of Defense. He also performs RCM for commercial projects including wastewater treatment, rotating equipment (pumps, motors, and compressors), off-highway vehicles, and diesel engines. He is a Certified NAVAIR Level III RCM Analyst and RCM Instructor who has taught over 50 classes and has developed a curriculum for the Department of Defense and Commercial customers since 2006.
David holds a Bachelor of Science degree in Mechanical Engineering from Texas A&M University and has led several large RCM projects and Root Cause Failure Analysis (RCFA) efforts while providing engineering support to many others. He is also a tutorial instructor for the annual IEEE/ASQ Reliability, Availability, and Maintainability Symposium (RAMS). Mr. Nelson serves as an SAE Reliability (G41) and Health Monitoring (HM-1) committee member for standards in Design for Reliability (DfR), RCM, and Condition Based Maintenance (CBM). He has authored several technical papers on applying RCM, CBM, RCFA, Condition Monitoring and Diagnostics, and Fault Tree Analysis. He is also an American Society for Quality (ASQ) Certified Reliability Engineer (CRE), ASQ Certified Six Sigma Black Belt (CSSBB), and Society of Maintenance and Reliability Professionals (SMRP) Certified Maintenance and Reliability Professional (CMRP).
David is experienced and knowledgeable in the fields of condition monitoring and diagnostics of machines including development, design, testing, and implementation of diagnostic and prognostic algorithms using methodologies described by ISO 17359, ISO 13373, ISO 13374, ISO 13381, and related standards. He is highly skilled in the statistical analysis methods for reliability engineering (Life Data Analysis/Weibull, R&M Trending/Crow – AMSAA), modeling and simulation (Discrete Event Simulation, Functional Block Modeling), measurement system analysis (repeatability and reproducibility), and other applied statistical analysis methods for engineering.

Dennis Pries, ASI
Dennis Pries is a Senior Analyst at ASI. Dennis has over twenty years of experience in all facets of Maintenance Supportability. He has performed and supervised major Department of Defense efforts in Level of Repair Analysis (LORA), Maintenance Task Analysis (MTA), and Provisioning projects. He possesses extensive experience in the development of logistics support documentation and source data, such as Logistics Operational Management/User documents, Integrated Logistics Support Plans, User Logistics Support Summaries, Post-Production Support Plans, and Logistics Implementation Plans. He performed Failure Mode Effects Criticality Analysis FMECA and Reliability Centered Maintenance (RCM) analysis for various transportation platforms He has expertise in Integrated Logistics Support (ILS)/LSA/LMI/LPD contract deliverables (BOMs, RPSTLs, IETMS Provisioning Data, and TM data).
Dennis has over 20 years of instructional experience, including curriculum and courseware development. Dennis has instructed over 50 classes that span the spectrum of ILS. Dennis Pries is a certified NAVAIR Reliability Centered Maintenance (RCM) Level II Analyst and Certified Master Training Specialist (MTS).

Chris Rooksberry, ASI
Chris C. Rooksberry is the Senior RCM Instructor at ASI and has over 21 years of experience instructing RCM and has been involved in over 200 RCM Classes. Additionally, he spent 3 years as the senior military RCM instructor at Naval Air Systems Command (NAVAIR) NAS Patuxent River, MD. He has provided RCM Analyst training to over 1,200 Fleet Support Team Engineers/Department of Defense contractors in every major fleet concentration area of the United States including remote site visits to provide training to United States Air Force (USAF) and Royal Air Force (RAF), US Army, and personnel. He also has provided RCM Analyst training to foreign governments and commercial personnel. He has been involved in RCM efforts supporting various military aircraft/production equipment, Data Centers, Power Generation, Building Facilities, and Municipal Water Treatment. Chris is NAVAIR RCM Level III certified, as well as NAVSEA RCM Backfit Level II Certified. He is familiar and proficient with all aspects of MSG III and SAE JA-1012 RCM requirements.

Nick Stevenson, ASI
Nick Stevenson is a Principal Engineer at ASI, with over 10 years of experience in Level of Repair Analysis and Reliability Centered Maintenance. Nick started his career in engineering and maintenance planning over 20 years ago as a nuclear mechanic on ballistic missile submarines in the U.S. Navy. There, he excelled in the position of Engine Room Supervisor where his collateral duties included appointment to the positions of Primary Nuclear-Mechanical Maintenance Coordinator and Machinery Division Training Coordinator for all nuclear-mechanical testing and evaluation. Upon departing from the Navy, Nick was employed with Johnson and Johnson as a Production Engineer for Acuvue contacts where he oversaw and implemented numerous production improvement initiatives while simultaneously completing his undergraduate degree in Nuclear Engineering.
Nick is a Level 3 certified RCM analyst with over 6 years of experience instructing. He is a leading expert on all Level of Repair Analysis software applications, including COMPASS, Opus10, and ASI’s own OptiAM® LORA Modeler.

Walter W. Whitington, ASI
Walter W. Whitington is a Maintenance Planning Subject Matter Expert at ASI, with over fifty years of experience in all facets of Integrated Logistics Support. As a United States Marine, Walter served as an Avionics technician, a certified Navy Instructor, and an Acquisition Manager for Automatic Test Equipment and their associated Test Program Sets. Walter supports multiple Department of Defense Program Offices with subject matter expertise in Maintenance Planning, Maintenance Task Analysis, and Level of Repair Analysis.
Walter has extensive experience with instructional techniques and curriculum development. His teaching experience includes 100 classes for over 1,500 students.

Rob Willis, ASI
Rob Willis is the Vice President of Acquisition Support and Program Management at ASI. Rob served as an Aviation Supply and Operations Officer in the United States Marine Corps before joining ASI. During his 26-year career in the Marine Corps, Rob served numerous tours as a Supply Department Lead and Officer in Charge. His tours included operational and staff commands, allowing him to participate in numerous logistics planning events to support forward-deployed units.
Rob’s instructional experience includes the development of several courses, including the Design Interface/Maintenance Planning Course, Product Support Analysis Course, and the Maintenance Task Analysis Course. Rob has over 20 years of instructional experience including certification as a Master Training Specialist from the US Navy.

Vijay Chachra, ASI
Vijay Chachra is the Vice President of International Product Support with ASI. Vijay has over 30 years of experience with US DOD LSA standards, software tools, consulting, and training using MIL-STD-1388 2B, UK DEF STAN 0060, and GEIA-STD-0007B, including over 11 years of S-Series experience. Mr. Chachra has tracked the evolution of PLCS and then the S3000L specification since the 0.1 release in 2009. He is well versed with UML and XML modeling and data exchange methodologies and was a member of the review and planning initiative with Pennant International group from 2009-2011. He also has a deep knowledge of the S5000F Specification having been a member of the committee since 2012. He has contributed to the development of both issue 1.0 and 2.0 releases of this specification. Vijay has developed and delivered over 30 classes in all facets of Integrated Logistics Support.

Peter Stuttard, Aspire Consulting
Peter has been involved in Defence support for all of his working life, initially in the Army and then as a specialist in Supportability Engineering. He has worked in the Maritime, Land and Air Environments, he has significant experience in working with Defence organisations including the UK MoD, overseas Governments, and Prime Contractors in places as diverse as the UK, Canada, The Netherlands, Germany, Singapore, Sweden, South Africa, and Turkey.
He has extensive experience as a lecturer and trainer in Supportability Engineering; he has been actively engaged in the development and training of US and UK Defence Standards, including ASD S-Series specifications. Peter has trained a great number of MOD, Armed Services, and Defence industry personnel around the world, up to the Post Graduate level, having lectured on a range of Post Graduate degree courses.
As an Army veteran, Peter served in the UK, Canada (BATUS), and Germany maintaining Army and Commando aircraft, he has operated on land and at sea, having deployed on Royal Navy [RN] and Royal Fleet Auxiliary [RFA] vessels.

Lee Fitzsimons, Aspire Consulting
Lee is a Director and support engineer with Aspire Consulting. He is the product lead for Aspire’s reliability-centered maintenance and training development services and acts as the focal point for Aspire’s involvement in the Pierian Academy.
A former aircraft mechanical technician with the Royal Air Force, after his service career was cut short by a sporting injury, Lee joined Aspire to become a support engineer. Lee has contributed to and led reliability-centered maintenance analyses, and wider logistic support analysis projects in the Air and Maritime environments on behalf of the user/operator community and industry.
Lee is a UK industry representative within the S-Series community, contributing to the steering committees responsible for SX000i, S4000P, and S6000T.
Lee was the product owner of Aspire’s supporting engineering software tool, A*, leading a multidisciplinary team consisting of analysts, software engineers, and customers, to develop and sell a homegrown tool. Lee has developed and delivered several training courses in topics including reliability-centered maintenance, Defense Systems Approach to Training, the S-Series, and others.

Jill Burbank, ASI
Jill is a Logistician III with 20+ years of aeronautics experience in engineering, training, and logistics support. She is now serving as a primary instructor specializing in Environmental, Safety and Occupational Health; Logistics Product Data; Maintenance Planning and Maintenance Task Analysis.
Jill is a strong believer in positive thinking in the workplace, her years of experience puts her in the position to constantly move forward, keep learning, and teach others along the way.