Getting Up Early
If a soldier says that they slept in, they probably mean that they slept until 7 am. The habit of waking up early which they get from basic training and deployment, somewhat sticks forever.
Popping Smoke
Similar to what you see in films, soldiers “pop smoke” to create a shield or a diversion so that they are able to move into position. Outside the military, if a soldier says he’s “popping smoke”, that usually means he’s leaving.