Gabriel rushes to the alleyway as soon as the first desperate call rings in his mind and sees Sam collapse to the dirty concrete (blood everywhere, staining the ground and dripping from a blade wielded by some nameless being — demon, he thinks, but he doesn't spare enough focus to find out for certain, just smites it with a snap as he drops to his knees at Sam's side); he caresses the hunter's forehead with a trembling hand and wills Grace into his body (it twists and winds through the veins, shocking the heart into a frantic rhythm and knitting the gaping, oozing wound shut in a single instant), and when Sam gasps and clutches at his wrist, Gabriel finally lets himself breathe again.