Backlog and FFP are 2 different things, and, typically, are not to be added together. Jayme Brooks, CFO, in her opening statements, mentioned the 2 together in the CC by referencing them both to "revenue related metrics." http://seekingalpha.com/article/3260755-capstone-turbines-cpst-ceo-darren-jamison-on-q4-2015-results-earnings-call-transcript 2 Separate things, but both revenues..... Of which $165.7M is from M-T Product Backlog Of which $61.2M is from FPP Service Backlog