Due largely to a growing number of major drug arrests, an increase threat of violent crime, and an increase in gang activity, the decision was made in 1990 to issue Heckler & Koch, MP5, sub-machine guns to 18 field personnel. These weapons had been purchased in 1986 when the change was made to the Heckler & Koch 9mm pistols. Those field troopers and sergeants assigned these fully automatic weapons received two days of intense training in their use. These weapons are assigned to sections. If an officer transfers out of the section, the weapon remains with the section and is issued to another trooper. As with all department weapons, troopers are required to qualify annually with these weapons.