Donald Trump was working away on the 26th floor of Trump Tower in New York when this afternoon's earthquake struck the East Coast -- and we're told, the Donald stood his ground like a boss.
According to sources close to DT, the earthquake shook the 58-story building -- but Don kept working away like nothing happened ... despite several workers abandoning ship.
Sources tell us, Donald "would never leave his building. He designed these from scratch. If he ever did leave during something disastrous, he'd be the last one out."
Thankfully, no one was hurt.