drug/alcohol testing policy: effective?

"cylon" wrote in message
causing suspicion. I know pilots who have left the bar and flown trips
without anyone realizing they were impaired. A small part of the
commercial
pilot group partaked in their desires before flying because the chances of
getting caught were slight. They could function on an acceptable level
while
impaired.

Those people have slowly been weeded out by randon testing. Randon testing
is the one thing that has deterred the chronic users and drinkers.

They administered breathalyzers? Drug testing is different from alcohol
testing. There's a big difference between being impaired on the job and a
few days before, no?

moo