According to the FBI, the second largest circumstance where law enforcement officers were killed 2001-2010 was in ambush situations (22 percent).
Attacks on critical infrastructure have become a growing concern for governments, private providers and law enforcement.
Rescuing a downed officer/civilian who is still in the line of fire is a skill that is not often taught.
The duty knife is a valuable tool that is carried by many officers for use as a general utility device, for evidence collection, and under certain extreme circumstances even as a life-saving device.