As Lt. McGiver exclaims, "Let's get over there," Sgt. Ruggin grabs the yellow notepad with his left hand. Cut to another angle and the notepad is in his right hand, and it's gone as he runs out the front door of the police station.
When Mason and Mrs. Engle are struggling to gain control of the pistol, several shots are fired. In the close ups, you can see that the hammer is forward. The pistol used is a model 1911 variant and will not fire unless the hammer is cocked to the rear.