Thank goodness for DVDs!! Leo wants the president to invest in some missile system which keeps missing its target in "The Drop In". I found this summary on televisionwithoutpity.com:

Out in the hall, Jed tells Leo that he is the Charlie Brown of defense, and that the Pentagon is Lucy. Leo, amazingly, has no idea what Jed is talking about. Jed explains, "Peanuts. Charlie Brown." Leo elaborates, "I've heard of them, I'm just not conversant in 'em." Oh, dear. Jed: "Why?" Leo says, "I've never read the comics." Jed asks, "Leo, were you born at the age of fifty-five?" Leo volunteers, "I know that there's a dog." Jed goes on to explain Lucy and Charlie's annual ritual of her convincing him to kick a football that she's holding, only to pull it away, gleefully, at the last second.