9 | f2 needs 0.8l/0.2h/1m/4av/$40, tech 80
10 | asking for too high and too low tech
13 | not an airfield, no materials, inefficient
16 | insufficient materials: 1,1 short 1l/1h, 3,1 short 1m
21 | build until out of avail/money
22 | sectors can build 2 each, but out of money after 3 total