That's "Glaser Safety Slug". Not "Glasser". It's a little hard to take a voluminous screed like this seriously when the trade name of a recommended product is repeatedly mis-spelled.
Having carried a handgun, both open and concealed, for years, most of what appears above is, IMHO, much overblown and based in competing fireside theories instead of actual practice. A laser targetting system, for example, is a stone waste of time on a handgun required for quick and effective use. The batteries are always flat or the switch always malfunctions. Pilots have good eyesight, give them rugged open sights and have done with it. Same for a suppressor (silencer).
Similarly, the extended discussion of the competing virtues of different frangible bullet types, &c, &c, &c, is mostly a bunch of abstract theory and ignores the fact that it really doesn't matter if a bullet punctures the fuselage of an airplane. Trust me, the plane will not explode if it does, and no passengers will be sucked out, James Bond films notwithstanding.
The Glock is a fine weapon in the hands of a well-trained officer. It suffers, however, from the lack of a secure and reliable deactivating device (a 'safety') and is therefore always hot when loaded - which may explain the number of A/D's which the Glock has suffered - including not a few bathroom incidents.
Breathless talk about big manly calibers like the 45 ACP and suchlike ignores the fact that most people cannot shoot this antique caliber well because of the severe muzzle blast and recoil.
If flight-deck crew are to have the option to be armed (and I think they should) give them Smith and Wesson revolvers with open sights, 38-Spl caliber, with a two- or - three inch barrel and leave it at that. It works, it's simple and safe, it's more than adequate for the purpose required, and just about anyone can shoot it. Leave the incredibly finely-detailed discussion of the handgun that is the absolute ne plus ultra of self-defense to the pages of magazines and the back rooms of ranges, where it belongs.
Me shootin straight
With my thirty-eight
Beats all his jive
With his forty-five.
llater,
llamas