My attention as drawn by this article on the ABC news website: if we ignore the large number of fatalities in the wake of the 2001 terrorist attacks in New York, 2007 has been the bloodiest year yet for Law enforcement, with 186 fatalities.
Obviously, I went looking for the core data, found on the National Law Enforcement Officers Memorial Fund website.
Most of these eaths are traffic incident related, shootings take the second place followed by health-related issues like heart attacks.
The guns used in the shotings were averagely documented:
"Assault rifles": 1
(note, there is one gun missing somewhere, as this doesn't add up to the 79 gunshot fatalities)
Food for discussion the next time Carolyn McCarthy claims that her Assault weapon bill targets the guns used most often to kill police officers.