USCG warning for users of inflatable PFDs. If that's you, take three minutes
to read this article

http://www.uscgboating.org/alerts/alertsview.aspx?id=50

Excerpt:
"The U.S. Coast Guard has been made aware of a potential problem when
installing CO2 cylinders that have bayonet tips in inflatable personal
flotation devices (PFDs or life jackets). If a cylinder is not properly
installed, the PFD will not inflate with CO2. The problem may affect
several thousand PFDs, but the Coast Guard is only aware of one incident to
date.

"Some Mustang, Protexion, and Stearns/SOSpenders PFDs using Halkey-Roberts'
inflators can indicate a green "Ready" status when the CO2 cylinder is not
properly installed. This false positive green indication occurs when the
cylinder-bayonet assembly is inserted in the inflator, not turned, and the
cylinder is not ejected. "

Joe