Multiple incidents of unprovoked attacks on United Airlines flights have come to light, sparking investigations by authorities. Passengers have reported being brutally assaulted while sleeping, with one individual, a deaf and non-verbal man, sustaining severe injuries in a particularly vicious attack that left the cabin spattered with blood. The FBI is investigating allegations against a Florida man who reportedly sucker-punched a sleeping passenger, leading to significant injuries. These violent incidents have prompted calls for increased scrutiny and safety measures on commercial flights as the Federal Aviation Administration (FAA) conducts investigations into the assaults.