morons should not look up..military plane flight patterns and comericial aircraft flight pattern willl criss cross each other.ebenthough they fly at differant alltitudes....try not to look up cause you will become a paranoid wreck all for nothing.poison chem trails would leave dead birds bees ant worms fly etc all over the sidewalks and city street..stop your rediculous chem trail paranoia progaganda...arrial airplane sprays are used to kill off misquitoes to prevent you from getting encephalitis which could kill you....crop dusting is common ...florida grows lots of crops...harmeless to humans and neccessary ..