In Thin Air - S8-E5
Continuity mistake: After Rabb flies as RIO near the end of the movie, they land in a F-14 with the number 114, however when they get out of the aircraft the number is 242.
In Thin Air - S8-E5
Continuity mistake: When Harm goes up with Lt. Albrecht as his RIO, they are shown flying 4 different aircraft - Tomcats 103, 104, 114, 242. This is what happens when stock footage is used.
Answer: Officially, the individual has been ordered to attend, failing to could be interpreted as either, Failure to follow orders, dereliction of duty, going AWOL, or even desertion. It would depend on the underlying reason as to why the person doesn't appear.