According to Navy Times:
Air Traffic Controller 2nd Class (AW) Mike McCastle will attempt to break the Guinness World Record for most pull-ups completed in 24 hours on July 26, in front of an audience at a public park near Naval Air Station Whidbey Island.
He’ll need to put his chin over the bar more than 4,030 times,a record set in 17 hours by Chief Special Operator (SEAL) David Goggins in 2013. McCastle is giving himself a full 24 hours to complete the challenge, hoping for an average of 4.5 pull-ups per minute.
McCastle is seeking donations at the event, which will be donated to the Wounded Warrior Project.
“I know I could never do something that would totally equate to what they go through every day, but I figured if I could just show people that you can suffer and you can put yourself through a great deal of pain, and by persistence and setting goals, that it can be done,” he told Navy Times.