Any time UFO is associated with an incident, I would want triple confirmation. Parallel contrails would also be more indicitive of a common airliner route. At 40,000 you cannot make out the difference between an F-16 from an F-15. Regular airliner traffic probable cause.
Fighters waiting for something..... very hard to discern just from watching an aircraft.
Heliocopter - lacking context or if even the correct type. I have lots of helos with lights, they are police copters.
From what you posted, I'd give it a high degree of reynolds wrap.
If you see the flas light from anuke how close would that mean its proximity is?