So would changing existing policy without a full nationwide unlimited CCW license.
Exactly. A piece of equipment is easily changed. While I agree that the whole locking holster (as reported in open source media) is stupid, authority to carry 24/7 based on being an FFDO is not needed to correct any problem that may or may not exist.
Also, as far as the debate about "everyone should be screened", the actual answer is that "they are screened". An FFDO pilot checking in, having his credentials checked (screened if you will), an airport worker with SIDA badge utilizing operational doors while at work, or LEO's who are properly credentialed, Airport SIDA badged are all considered "screened". Its not standing in a line being wanded, but it is considered "screening".
Now, some may not think that is adequete "screening", but to those who wrote these regs (and they have been around alot longer in most cases than 9/11)consider it "screening".