Question: rhs how to use javelin?
Answer: 2.1 Locking with the Titan / Javelin Switch to thermals N (Arma 3 default key bind Night vision ). While keeping your aim steadily on target press and hold Tab ↹ (ACE3 default key bind Lock Target [Hold] ). When the sound changes and a cross appears on the screen the target is locked and you're able to fire.