Powerless over UFO sighting.

This sighting took all of three minutes. After a night class my buddy and I went for a walk around the block and on the way back we stopped walking, I don't know why we stopped walking and was confused because we wanted to get back to the dorm. I looked at my friend and he looked at me and I said well lets go, and he said ok lets go, and we just kinda walked around in a circle and once again I said lets go and he said ok lets go but we couldn't go!  it was really wierd, we were seemingly stuck in a 8 ft circle of side walk and we were very suprised, now we were two big guys I an ex hockey player and my buddy a football player, believe me we could run through a freaking brick wall but we couldnt walk on and then at the EXACT SAME INSTANT (like we were allowed to now see) we both got scared and felt the hair stand on end and looked up across the street above a 3rd story bank building at a perfect flying saucer, it was white on top and the bottom was red & blue  I estimate the size to be a 150 ft in length and it was close enough if I had a rock I could have hit it. No noise. It just hung there and then zig zagged away & going straight up faster than anything human can.  Now, we can walk and now could HEAR...cars going by in the street and right next to us was a shopping center and could hear the shoppers rolling their carts to their cars etc.  all this time we were in like a cone of silence and didn't even notice it till the sounds came at us  again.  We both deceided right then and there not to tell anyone but when we got back to the dorm which was on top of a small hill overlooking the bank building we went into the top floor where students would congreate and guess what everybody was talking about the flying saucer they saw, we still kept our mouths shut though, but I dont know why, I feel that I was kinda asahamed at my powerless position.  and ny buddy and I would never talk about it.  No drugs No drink.  Just studies (Tough engineering college in Pasadena!)  I swear its true and when! I ever hear stories about people being abducted by aliens I know what it feels like to be powerless and I didn't freaking like it one bit and I'm really PISSED OFF still about this whole incident 35 years later!!?  What am I a freaking bug being looked at and controlled?  No other incidents to report.  Glad to get this off my chest finally.
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Date is approximate.  Witness now has considerable technical background.  
PD))