Military/Civilian flight training

Flight training was coded in four categories: navy, marines, airforce, and none. We inferred civilian training when no branch of the military was specified. This may leave us with a few cases mis-classified if a pilot with military training either forgot to indicate which branch or did not like the categories we offered. Sixteen pilots wrote in other designations for military training. These included Army, Air National Guard, Airforce Reserve. We excluded these write-in cases from the analyses of military training. The other cases gave us 111 with navy training, 42 with marine corps training, 234 with airforce training, and 159 with no military training (See figure 6).