We spoke to a retired US Air Force English Language Trainer (who requested anonymity). Here is their take on conquering the "Exclusive" form:
Scores from Form 91 do not require external conversion tables and are used for direct placement into English training programs. Review Summary alcpt form 91 exclusive
: Specific vocabulary and idiomatic expressions featured in this form include: Scientific & Nature terms Insecticide (chemical to kill insects), (animals), and (rebounding sounds). Action-oriented verbs (to attach), (to guide), and (to send out). Idiomatic expressions We spoke to a retired US Air Force
Form 91 features 66 listening items. The audio involves military and general life scenarios. alcpt form 91 exclusive