As we saw earlier today, Justin Hammer took over Iron Man's armor and kinda sorta killed a U.N. ambassador!
Anyway, the police have confiscated the armor while they investigate Tony Stark's claim that it wasn't his fault (likely story!). But that means Tony is without his bodyguard [editors note--Tony's secret ID was none by very few at this point in time]!
Fortunately, he knows someone who can coach him up a little bit in self-defense:
From Iron Man #125 (1979)