Sergey kept an eye on the retreating soldiers making sure they don't get any funny ideas. He then moved forward for an area sweep. Even though his PPC doesn't use up ammo, tempting it may be to fire at the APCs, he decided not to squeeze the trigger. Heck, it'll be a nasty surprise if those buggers ever come back.
He checked his sensors for more targets. Would be a good idea to have advanced sensor suites if powered down mechs are waiting to ambush. Too bad his rust can doesn't have any of those fancy stuff. Still, Mk 1 eyeballs and Infrared should be reliable if it weren't for the smoke and fire...
Sergey hasn't defused an actual bomb but he thought the "bomb" might trigger other explosives in the surrounding area. The old man was the cautious type. In this case, he can't be careless when his life and his prospects of a paycheck were on the line.
"See first if there are wires laying around. They should be visible in thermal if the wires are live."