Boeing 727-100 (N323PA)

I am happy to see my picture with so many views, and I am trying to remember when I took it. It was between 1965 and 1970, but u see under the belly, guys crouching there, and they are not employees, but the airport police guys and for some reason a white box there, seems they are searching for something??? but I dont know, Looks lilke all passengers loaded, and ready to close the door. Looks like some late bags coming on the cart. Taca airlines did the loading there, and only panam we supervised them on the ramp. We did the paperwork. Its a 727, so no air start needed, Paul