On october 10, 1972 myself, my 5yrs.daughter, 2 neices and 2 nephews were playing tag in the back yard .

When we looked over on the ridge across from our house and saw the ufo.  It was about 50 ft. round,grey metaletic with panels that looked like the windows in some office blds.  It was about 10 ft. above the tree line. 
We watched it for a few minutes then we yelled to my mother to come see the ufo. She came out of the kitchen and looked at it. then she went back inside. 
We contuined to watch it, for about 8 more minutes and it watched us, then it moved off behind the ridge.  We went into the house, my father had been watching the 6:3O news, on nbc.  
We told dad what we saw, as we were explaining.we pointed out the livingroom window and there it was again.  Dad started to tease the grand childern, saying the martians were here to get them, they got vary scared,my daughter and my nephew were hanging on to dads pant legs. 
We watched it for about 10 more minutes. It acted like it knew what we were saying. 
THen it went behind the ridge agian.  During all that time ther was no sound.