Y'know, when you're really asking someone to do something, they have a choice and can say "No." The thug with a gun to your head who entreaties "Please, kind sir, may I have your wallet, ..oh, and perhaps your watch?" isn't really asking.Janet Napolitano's quote sounds like something straight out of Communist Russia or Nazi Germany, talk about propaganda.
"...we ask the American people to play an important part of our layered defense. We ask for cooperation, patience, and commitment to vigilance in the face of a determined enemy..."
What Napolitano is means is "We demand that you play a part in our security theater, we demand your cooperation, citizen."