Take a Good Look

I'm sorry, but contrails or whatever the hell you think these "clouds" are, actually are not chemical trails.  All of that is just a bunch of hype stirred up by people who don't understand what is really going on, and think they are doing the world a service by applying their manufactured understanding to the phenomena.  As for the first one, it is in fact light from the setting sun.  I get pictures like that almost all the time specifically at sunset, never at any other time of day.  Number two and three are jet trails that are caused when water vapor created from the combustion of hydrocarbons rapidly condenses in the cooler upper part of the troposphere creating formations that are in fact clouds.  Jets do not leave behind any top secret chemicals for government testing.  Even if the government was testing a top secret chemical weapon, they would not place it on civilian planes for dispersion, nor would it be placed on planes that are owned or piloted by foreigners as such would create a security threat.  If DARPA was testing anything such as what conspiracy theorists describe, they would have no problem using already available military craft for dispersion.  Would that not create suspicion?  Not as much as say, placing containers filled with an unknown classified fluid on a commercial airliner, which anyone in the airport is bound to notice.  Also, no one can definitively say that they know what something looks like, especially when it comes to phenomena in nature.  No two sunsets will ever look the same, and there will always be events that will look particularly unusual.  Finally, if the government was researching weather manipulation, and I wouldn't put it past them to do such, there is more money in trying manipulate rainfall to feed drought stricken areas than there is in using weather as a weapon, especially through chemical means.