Three Americans were convicted at trial Monday with base jumping and reckless endangerment after skydiving off the World Trade Center in the middle of the night nearly two years ago.

New York residents James Brady, 33, Marko Markovich, 28, and Andrew Rossig, 34, were convicted on three counts and face up to one year in prison when they are sentenced in August, prosecutors said.

The trio walked onto the building's then construction site at 3:00 am on September 30, 2013, and climbed 104 flights to where Brady, who worked at the site, had hidden their gear. They then leaped off and parachuted down to the streets below.

The defendants were arrested six months later following a painstaking investigation.

A video of the base jumpers' daring nighttime descent was posted on YouTube and has been viewed 3.5 million times.