The older stance for maintaining one's posture while firing a gun is the Isosceles Stance (both legs equidistant from the center of mass from the body, knees bent, like riding a horse). The Weaver Stance, involves one foot in front of the other with the knees bent.
Very good idea about the radios, but, if you know radios, you only key one radio, not both. One radio transmits, while one radio receives, over and over again the same sounds, causing the feedback. If you transmit both radios, no feedback.
This was the first episode of the season in which Peter Onorati appeared, having been reduced from a regular to recurring status.
The episode title, SOS, refers to the distress code sent in Morse code (S is three dots, and O is three dashes sent repeatedly, which leaves very little room for misinterpretation).