"Silence and something that lets me see where people messed around," Tony said after a minute. He was going to request metal detection, but that'd be no good for punji stick traps. It needed to be based on connections. "Like if someone disturbed a space. Cause Charlie likes to put traps in any place he thinks will get someone, and they have damn good camouflage." 

Then, uncharacteristically for the 'Nam, he heard thunderous booming in the distance, dull thudding. He'd been shadowing a trail, checking for traps and trying to watch the river when he stopped at the sudden sound. Had to hand it to Tony, those lycanthrope senses were tuned, his every move was cautious and aware of the terrain. The silence ward wasn't changing his habits of movement here; and the way he plucked that grenade trap out of the ground was mute testament to how deadly the ground was; the jungle lent itself to perfect concealment, and punished the unwary. 

Tony would have the freak out at the flood of old memories, doors long barred shut, later. Now was necessity.

"Not artillery, not mortars and not any kind of explosion," he told Parry.