Never Back Down, Never Give Up, on a Commercial Rooftop Gas Line

Two techs lean into the gas heat section of a rooftop package unit. One wears a grey cap, grey hoodie and red gloves, face down in the work; the other wears a black hard hat and a black shirt.

A close-up shows gloved hands turning a pipe wrench on the unit's gas piping above a rooftop walkway mat, laid there to protect the roof membrane.

Rooftop gas lines run across the roof on supports, then drop into the unit through a shutoff valve and a sediment trap, a short capped leg that catches debris before it reaches the gas valve. The chant is call and response, and it repeats until the end.