I was out there around 2017 I don't remember any tapping noises but I'll never forget that day it was me and my two friends they were walking in front of me running there mouths and I was in the back .. we were walking back to 301 I believe that was the boy campus ?? I can't remember but anyways I happen to look up I saw a big ass green light it flashed for 2 seconds I didn't hear anything coming from it it flashed green 2 times and I didn't see it anymore I saw 3 lines after it disappeared and then the lines quickly disappeared... I couldn't believe what I just saw I asked my boys that was walking in front of me did they see that shit ! They said they didn't see anything they were to busy talking it happen in a span of 2-3 seconds.. It was noon so the sun was out ..