After the battle of Taranto and the attack on Pearl Harbor, however, it became obvious that air power made a fleet concentrated in a port vulnerable, and a fleet in being was normally no longer a safe option. It is, of course, possible to imagine a situation where a fleet is still relatively safe in harbour, such as the opponent being unwilling to attack them in harbour for political reasons. After looking at the alternatives, "The strategy that was accepted for the Argentine Navy [in the 1982 Falklands War] was one of a 'fleet in being' concept ...