Bar None.
Every one working on or around a/c have a great deal of training towards security at the airport, so not being a security expert though do have a thorough knowledge of the proceedures involved, once the call is made the ball starts rolling and these proceedures kick in, to what degree depends on the the viability of the threat and then is met with the corresponding degree of response.
Gone are the days where someone walked up looked at it, kicked it, picked it up and shook it before pornouncing 'NAH it's OK.
My previous post was not mean't to be derogatory, just an observation from someone who faces this situation at times when around the airport/aircraft.'