"Both. It really helps with flying, let me tell you." And it had definitely given him an edge in the agility training he'd had when he had first been selected for the program - he just had to keep everything down to peak human levels, rather than slightly superhuman.

Sam hesitated for a moment. "The other thing is that...I could bite you. If you wanted, of course." The only way he would have considered biting someone without their express permission would have been if their life was at stake. "Then you'd be, well, like me." He studied Steve's face to gauge his reaction to the suggestion.