When Sonny is providing covering fire for the helicopters a closeup shot of his M-46 shows that it is loaded with nothing but tracer rounds. Tracer rounds help gunners using rapid firing automatic weapons to see where they are shooting at night, typically only every fourth round is a tracer. There would be no need for them on a day mission, and having every single round be a tracer would not be very useful.
When CIA agent Mandy Ellis is debriefing the team about her kidnapping she pulls up a map of Pakistan. She is describing the Swat valley to the north-east of Peshawar, however the map is showing the Parachinar region that is to the south-west of Peshawar.