I'm more a fan of [url=http://www.projectdelta.net/mcguire_rig.htm]the McGuire rig[/url], myself... at least for emergency through-canopy extractions of entire fireteams.

[url=http://www.projectdelta.net/carpenter_story2.htm]It's not the safest way to lift a person[/url], but sometimes it's better than waiting for something perfect to show up in the form of a box.