Photographs are copyright the creator of those photographs (title 17, U.S. Code). Simply, images may not be used without written permission from Paul Antico. This written permission is called a license. Like a rental car, it is more affordable to rent the car (license the image(s) desired) for the uses you need rather than pay the much larger expense of a buying the entire car (copyright transfer).
Willfull infrigement is subject to up to $150,000 in statutory damages PLUS attorney's fees. All images are registered with the U.S. Copyright office of the Library of Congress.