Chemical trails being sprayed ahead of the hurricane?

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YouTube User: whatsupinthesky37 -   This is the time lapse from August 23rd 2012 at 6:10am to 8ish on the lower eastern shore of Maryland.  (Ocean City MD Area)  Usually they spray about 2 days ahead of any precipitation that will be falling on our area but this time the patterns were different in the sky (Much more vertical lines) as well as no storm coming accept the hurricane.  Are they steering it? If you watch Why in the world are they spraying you will see how they talk about the