mayday (air crash investigation)
Mayday Air_Crash_Investigation Air_Emergency Air_Disaster Mayday:_Air_Disaster メーデー!:航空機事故の真実と真相 メーデー! メーデー!航空機事故の真実と真相 もう助からないゾ♡ フィクションじゃないのかよ!騙された!
Canadian documentary series featuring airline accidents and incidents. Pixiv users often add this tag humorously to images that cause the viewer to panic.