Pete Cranshaw is the head of Teras Terrace security. Not wanting the Terrace's secrets to get out, Pretorius Technologies doesn't rely on the regular police force to keep order in Teras Terrace, but rather employs their own security forces, made up of residents of the Terrace, who are entrusted with full police powers. While not the head of the Terrace's security, Pete Cranshaw is possibly its most active and enthusiastic member, quick to respond to any call or perceived danger of crime. The fact that he has a siren built into his back may have been a factor in his being hired for the position.
Pete drinks jet fuel, which he requires to power his turbine engines, and has developed quite a sophisticated palate for the stuff, strongly preferring some types of fuel over others.