My airport is dual-use, with heavy civil traffic and F-15s based on the field, along with visiting F-16s, F-18s, etc. The fighters have some magic number of pounds they are supposed to have in the tanks when they land, but don't have much margin above that. Typically when they recover they are somewhere between dry and dryer, judging by the number of minimum fuel calls I get. It doesn't hurt that we are CAVU about 350 days a year, and have 4 runways to play with if one gets shut for some reason.