Photos of the week: 12/15 - 12/22

A tragedy in Washington state captured headlines throughout the week after an Amtrak train on a new route derailed on Monday. At least three people were killed and nearly 100 others were injured when the train's cars derailed and plunged to the busy highway below. Federal investigators say the train was traveling 80 mph in a 30-mph stretch of the track during its inaugural run.

Other major headlines of the week included a power outage that caused chaos at Atlanta airport, the House approved a sweeping tax bill and a tour bus was involved in a deadly crash in Mexico.

Click through the slideshow above to see photos from all of these events and more, and be sure to check back next weekend for our selection of the best photography from the week.