The portable nuclear weapon or “suitcase nuke” has long been a staple of popular fiction, appearing in dozens of movies, TV shows, and video games including The Peacemaker, 24, and Battlefield 3. But is it actually possible to make a nuclear weapon small enough to fit in a suitcase, and if so, has anyone actually built one? This made it difficult for SADM teams to move quickly or stealthily and significantly increased the risk of injury. By the late 1970s the concept of a limited, winnable nuclear war had become antiquated, with both NATO and the Warsaw Pact realizing that any conventional conflict was likely to escalate into a full-blown global nuclear war. Nonetheless, the SADM teams remained alert and ready to jump into action until 1989, when the W54 was finally declared obsolete and all stockpiled warheads were recalled and decommissioned.