My son(16)daughter(11) and I were throwing football when a 500ft long 50ft wide cylinder shape above pioneer peak mt. Palmer Alaska caught my eye We were looking from wasilla. It was About 25,ooo to 35,000 ft high.From the left side about a 5th of length was red.It had no wings or motion at first then it blinked out moving about 8th of a mile, it did this 4 times before just blinking out gone.I had a tree to judge movement it moved at each blink.It looked made of stainless steal very shiny.It had #$@#@ no sound,no wings or exhaust yet moved not just in one direction but back and forth which I know can't happen.It was large I could not tell it's depth. Sighting lasted about 5 minutes after it blinked 2 times I sent my daughter inside to get cameria but it was over by the time she got back out.