Astonishing moment two prison inmates escape by dangling from a helicopter that landed on the roof for six minutes while guards did nothing

The astonishing footage was filmed by prison guards in Quebec and has come to light during the unrelated trial of one of the two escapees, Hells Angels sympathizer Benjamin Hudon-Barbeau.
http://www.dailymail.co.uk/news/article-3495061/Astonishing-moment-two-prison-inmates-escape-dangling-helicopter-landed-roof-no-guards-tried-stop-despite-taking-six-minutes.html