Corrected entry: When he introduces Charlie to the class, Jester's cover has an EGA (Eagle, Globe and Anchor) on it, making him a Marine. Later, when Maverick is called into Viper's office, both he and Viper refer to Jester as "Commander Heatherly." Commander is a Navy rank - a Marine in the same pay grade would be a Lieutenant Colonel.
CountArtha
16th Jul 2016
Correction: The insignia is not an EGA (Marine insignia); it is a proper Naval insignia. In addition, he is wearing the proper beige Naval garrison cover; a USMC cover is OD green.