What a great photo of a beautiful hawk! You've captured the field marks perfectly in this image.
The most important feature on this bird is a mark called the patagial mark. This is the dark bar on the leading edge of the wing next to the neck and it is the defining feature found on all Red-tailed Hawks. The patagium is actually the flap of skin that stretches between the shoulder and the wrist on a flying bird (contrary to popular opinion the leading edge of a bird's wing is not formed by bone).
Additional features seen in this image include the lack of a red tail! This doesn't mean that your bird isn't a Red-tailed Hawk, it means that your bird is a juvenile. The clean white patch on the upper chest is also a mark found only on juveniles (adult Red-tailed Hawks have a buffy tan chest), as is the thin dark trailing edge on the wings.
Finally, you can tell that this is a Red-tailed Hawk from the eastern United States because it has a white chin (western birds typically have dark chins).
So, all in all there's a lot of great information in this photo. Thanks for your question!
David Lukas and Simone Whitecloud