I just returned from a wonderful trip!
Thank you Dan and everyone for comments and tips.
I found the security very tight on US Air, In PHL, there was a second security screening by Israelis that I felt was very thorough.
My first time flying them an I found them very pleasant and helpful.
I was worried about getting to PHL on time as connection was close and they just put me on an earlier flight in the airport with no hassle at all.
On our return, I took off the baggage tags in the baggage area, I didn't see anyone there from US Air anyway. We just walked straight out of the airport.