 Any DoD contract involving the production, modification, maintenance, repair, or overhaul of aircraft must contain one of these two clauses which requires the US Government to assign a GFR to oversee the contractor's operations.These two clauses serve to both indemnify the contractor (reducing program expenses) and also to help protect the assets.A GFR must be a current military aircraft crewmember or be a US Government Civilian with previous military aircraft experience.