lima lima mike foxtrot

means "lost like a mother fucker"

Rescue One: Fallen Angel one what is your grid? Over.
Fallen Angel One: Rescue One we are lima lima mike foxtrot, break, last grid Yankee tree six, break, current heading approx whiskey. How copy?

Rescue One = rescue team looking for downed helo pilot

Fallen Angel = downed helo pilot needing rescue heading approximately west.