While aboard a sailboat on the Florida Panhandle where I was photographing jet fighters taking off and landing from a nearby base, I soon realized the black glob on each image was being caused by a fleck of debris on the camera sensor. Knowing it isn’t sound practice to touch the sensor or mirror, I reached into my backpack for a finger-squeeze air brush. Of course it wasn’t there. But there was a deck of cards in the cockpit. I removed the lens from the camera body and, while holding approximately half the deck in my hand, fanned the cards to create enough draft to blow off the nuisance particle. Unlike in a studio, photojournalists usually work on the run and that means making due with whatever equipment is available.