I'm less charitable to the use of the cloak during the fight; I really don't see what game mechanic advantage to give to someone fighting with a sword in one hand and a blinding cloak in the other. Hawks' player is going to have to choose between the two each turn. On turns Hawks uses the blinding cloak, his opponent will, if he's hit, have to save vs. science or lose his attack that turn. It's not an effective attack, but more of a delaying move, really.
In this instance, Bob is not rescuing Sheena for a good deed XP award, since it does not count towards saving fellow Heroes. Instead, Bob is just playing smart and working to keep his comrade-in-arms alive.
That Bob is able to rush into the line of fire of the machine gun, pick up Sheena, and run out either means the Editor has rolled horribly for that machine gunner, or he's being too merciful to his players and deliberately unbalancing his game.
(Scans courtesy of Comic Book Plus)