Congressional Research Service Report on Transportation Security

After a "suspicious" passenger left the lavatory of the plane, an alert flight attendant noticed a fire extinguisher was out of place and notified the pilots. The plane was diverted as a safety measure.

Fire extinguishers have been used as improvised explosive devices (IEDs) so this flight attendant was wise to call attention to it.

One way to immediately know if your extinguishers have been removed, depressurized or blocked is to monitor them with en-Gauge.

In a bizarre story out of Denver, Safeway employee, Michael Julius Ford, spent the last 72 minutes of his life hunting co-workers and setting fires.  With the threat of being killed, other Safeway employees used extinguishers to put out the fires.

"Denver fire Lt. Phil Champagne said several fires that were set Sunday were in large rolls of paper and in between piles of bulk dry goods. The warehouse sprinkler system kicked on and put the flames out.

June 9th, 2006 - With calm and quick thinking fuel-truck driver Chris Pugliese saved hundreds on Friday by using a fire extinguisher the way it was meant to be used!

DHS technologies take a step forward with the installation of Mine Safety's multi-sensor detection system. MSA makes a whole range of chemical detection equipment worth taking a look. From the article:

Bangkok - Fire extinguishers have become the latest lethal weapon in the militants’ arsenal in Thailand’s troubled deep South. On May 9, a mobile phone was used to detonate a fire extinguisher bomb exploded in Narathiwat, the ninth such device to be used there in recent weeks.