Envy.

That skydive, that preternatural flight, was absolutely extraordinary. I needed to see this particular part of our planet from just that height. Needed to see Nurse sharks patrolling from 1200 feet. To run my toes through the top of a rainbow. To pass through cumulus clouds with my own fast-moving skin. I needed to fly through rain into sun. Needed to feel a planet impacting my feet, so gently so gently. Needed, just for a few moments, not to be jealous of the birds...though I envy them for much more than their effortless flight now. Now I know the soft, open whistling that composes so much of their auditory lives. I cannot help but want to hear it, too.