A Maryland man wasn’t exactly flying under the radar after throwing a lethal punch at a United Airlines gate agent — and the turbulent experience, including his arrest, was caught on camera.

Take a look — 54-year-old Christopher Stuart Crittenden lost his cool over flight delays at Dulles International Thursday, screaming, “I’m done with this bulls***” … before apparently launching a shocking swing at the gate agent who was blocking him from boarding.

The punch was so intense it sent the gate agent crashing to the floor, and you can hear the stunned gasps of bystanders before the clip cuts off.

A fellow passenger tells TMZ the guy was already heated after his first flight got canceled, the next one was full, and even though he finally snagged a seat on the third flight, he was still pissed over the delay.

When the gate agent tried explaining things, Crittenden lost it, allegedly swung at him, and reportedly even tried to go behind the counter to take a swing at the pilot, before getting tackled.

The Metropolitan Washington Airports Authority’s fire and rescue department told TMZ the injured gate agent was transported to a local hospital.

United Airlines issued a statement saying that Crittenden — a retired Montgomery County Fire Department Captain — has been banned from ever flying with the airline again.

The dog found dead alongside Gene Hackman and his wife likely died from a lack of food and water … according to an animal control agency in New Mexico.

Gene and Betsy Arakawa‘s kelpie mix, Zinna, likely died from dehydration and starvation … according to a necropsy obtained by The Associated Press.

The report says the Santa Fe County animal control agency noted the dog’s stomach was empty aside from small amounts of bile and hair.

As we reported … Gene’s official cause of death is heart disease and advanced Alzheimer’s … and Betsy died after contracting Hantavirus, a rare virus spread by rats and mice.

President Trump took a shot from the media … as in, a reporter hit him in the face with their microphone … and it’s all on video.

POTUS was talking to media Friday afternoon at Joint Base Andrews when a boom mic made contact with his face and shoulder.

Trump raised his eyebrows and then ignored an important question about the situation in Gaza, instead focusing on the mic moment.