Las Vegas Checkmark✔~10/1/2018

Short clip of a "checkmark" in the Las Vegas sky taken at 6:30 pm on October 1, 2018. View begins eastbound by Nellis AFB then arcs over the Vegas Valley towards the west. Notice in the "checkmark" the clouds are gone. The other "voice" you hear on this clip is my 31 year old Yellow Naped Parrot, Sweet Pea🐦. If anyone out there can logically & rationally explain this anomaly in the sky, please share your opinions in the comments below. To me, it looks like "a knife cut through the clouds like butter"🗡 BTW .... this is the very first video I have ever 'shared' on YT😊 Enjoy & many blessings to all😇