Off with his head , is old school now and has been for sometime. It is a medical issue and is treatable. Further hand held breathalyzers are notoriously inaccurate, however before we condemn the pilot we should get ALL the facts. And I would bet he will have to go for treatment either way to keep his career intact.
Another observation, the cops could arrested the pilot in a less visible area to save some dignity for the pilot. I am certain they wouldn't arrest a fellow cop caught driving on the roadside, in uniform, at a stop light, if that cop was intoxicated at work.