I'll be flying out of PDX and am planning on taking my handgun with me. I'm aware of the procedures at the airport, but getting to the airport is what I'm worried about. I don't have the option of driving since I'm going to be gone for too long, so that would mean taking TriMet (bus and MAX). However, I don't have my CHL yet. Is there any way I can legally take TriMet to the airport? The gun, of course, will be unloaded and I wasn't planning on taking any ammo.