This is not out in some rural town. This is in Portland, OR about 2 miles from downtown. Personal vehicles this large are simply incompatible with urban living and pressure their owners to continually break traffic law. Technically that Miata is parked as close to the stop sign as it can legally be, but as the Denali doesn’t fit in many places around here it’s owner is compelled to park across both the stop sign and the crosswalk.
Assuming they’re just regular schrader valves, you don’t need a special tool. You can even just use a pencil or ballpoint if you just want to let out the air. It’s less risky for you than taking out the valve.