I track the aircraft when they spray. In Colorado it is about every ten days or so. I agree that the density has changed recently. A few years ago it would block out the sun, which reduces the effective Vit. D people need to absorb. ( during covid this could have been puposeful since those with low D levels are more susceptible to illness.) The aircraft are predominantly air busses that have a trustee as owner. They fly at 30,000- 35,000 feet. I spoke with an FAA agent after I contacted my local representative. The agent ultimately said there was nothing to investigate and there was no way to know what aircraft were flying! So to me lying like that means something is amiss. Additionally there have been some pilot whistleblowers that have verified the chemtrail usage of chemicals like aluminum and barium.