Hangglider - the bands you refer to are reserved for the specific use. However if the band will save your 6 the you can bet I will step on it. When saving my 6 there is only it helps or it does not help.
Pull the trigger is as correct , a nice steady pull straight back, as squeeze, as in squeeze it straight back. But 10 bucks says unless you are very well trained, your average patrol/detective is yanking the trigger in a fire fight.
The radio will not save your life;
I have to disagree. In any fight involving more than one friendly comm's are key to saving my life. As well as getting lifesaving help if i take a major hit.
Crossfire - I like crossfire if we are doing it. If you assume avoiding crossfire means avoid the bad guys CF then yes avoid it.