Several recent flights faced emergency landings after pilots mistakenly believed there were security threats to the cockpit. A SkyWest flight bound for LAX returned to Nebraska when pilots thought someone was trying to breach the cockpit, which turned out to be a false alarm triggered by communication issues. Similarly, an American Airlines flight was diverted after the crew, unable to reach pilots, banged on the cockpit door, leading to concerns about a potential hijacking. The situation was caused by misunderstandings surrounding static sounds and knocking noises, which were ultimately identified as miscommunication rather than actual disturbances. These incidents highlight ongoing vigilance in flight security, reminiscent of past high-stakes scenarios.