Via Reddit

Via Wikipedia:

The HAHO technique is used to airdrop personnel at high altitudes when aircraft are unable to fly above enemy skies without posing a threat to the jumpers. In addition, HAHO parachute jumps are employed in the covert insertion of military personnel (generally special operations forces) into enemy territory, in circumstances where the covert nature of an operation may be compromised by the loud noise of parachutes opening at low altitude.

HAHO jumps also allow a longer travel distance due to increased under canopy time, allowing travelling distances of more than 40 miles.

And just to put some perspective: The guy is way way up (commercial plane up) there ridding a piece of fabric.