His upper lip folds in slightly from an injury when a large shell hit his chest, legs and face last march. it was unpleasant, he says, but i had 16 operations to rebuild my bones and teeth. i got back into the fight. western help has kept them afloat, they say. this anti-armor barrett sniper rifle a donation, used so often that it s suppressor has come loose and detaches. these machines, and men, are working at a tempo they were probably not designed for. they know why they are here, though. my son is growing up, sasha says. he is little but he already trains. he already knows who the enemy is. and that is russia. hoping each single shot brings russian defeat closer. nick, is there a sense how many of these elite units ukraine has under its command?