And how does a single test performed 10 years ago indicate that the government is putting evil chemicals into our air today? Where everybody, including the government, will be exposed to them? Sorry, it does not compute. Besides, if you follow the link I gave, it refers to the chemtrail claims and mentions the test. Old news. You will see that contrail behavior is not consistent, but depends on upper atmosphere wind patterns. There are a lot of them around Washington, because there is a lot of air traffic here. Jeez. Sleep with a nightlight.

By the way, contrails are composed of ice crystals, which do not evaporate.