UFO Sighting in Sherwood Park, Alberta on 2017-07-17 18:30:00 - It flew at about 30000ft. at first glance an airplane. faster then a normal sighting of a plane which caught my attention. no con trail which then got my full attention.A sudden change in directory straight up in the sky then lost visual
Watched a high speed aircraft heading on a southern projectory. no sound, no con trail and silver cylinder shaped. after watching for a minute changed direction suddenly and went into the atmosphere. at that time line of sight was lost.