Photos of the week (photo gallery)

ASSOCIATED PRESS

President Barack Obama, right, listens to Republican presidential nominee Mitt Romney during the first presidential debate at the University of Denver, Wednesday, Oct. 3, 2012, in Denver. (AP Photo/David Goldman)

ASSOCIATED PRESS

Tony Stewart (14) flips over as Clint Bowyer (15), Regan Smith (78), Jeff Burton (31), Jimmie Johnson (48), Casey Mears (13), Aric Almirola (43), Dale Earnhardt Jr., (88) and Sam Hornish Jr. (22) crash around him during the NASCAR Sprint Cup Series auto race at Talladega Superspeedway in Talladega, Ala., Sunday, Oct. 7, 2012. (AP Photo/Greg McWilliams)

ASSOCIATED PRESS

An Army carry team moves a transfer case containing the remains of Sgt. Thomas J. Butler Tuesday Oct. 2, 2012 at Dover Air Force Base, Del. According to the Department of Defense, Butler, of Wilmington N.C., died in Afghanistan. (AP Photo/Steve Ruark)

ASSOCIATED PRESS

Emergency personnel respond to the scene of a train derailment in Hanford, Calif., Monday, Oct. 1, 2012. Two cars and the locomotive of the train car derailed after colliding with a big rig truck in California's Central Valley, authorities said. At least 20 passengers suffered minor to moderate injuries, authorities said. The crash occurred when the driver of the big rig carrying cotton trash failed to yield and hit the train, authorities said. The impact pushed the two passenger cars and the locomotive off the tracks south of Hanford, a farming town. (AP Photo/Gosia Woznicacka)

AP

Utah wide receiver Kenneth Scott (2) grabs a touch down catch as Southern California cornerback Torin Harris (4) defends in the first quarter during an NCAA college football game Thursday, Oct. 4, 2012, in Salt Lake City. (AP Photo/Rick Bowmer)

ASSOCIATED PRESS

St. Louis Cardinals' Allen Craig (21) is out at second as Washington Nationals second baseman Danny Espinosa turns the double play to end the seventh inning in Game 1 of baseball's National League division series, Sunday, Oct. 7, 2012, in St. Louis. Yadier Molina was out at first. (AP Photo/Jeff Roberson)

ASSOCIATED PRESS

San Francisco 49ers safety Dashon Goldson celebrates after recovering a fumble by Buffalo Bills tight end Scott Chandler during the second quarter of an NFL football game, Sunday, Oct. 7, 2012, in San Francisco. (AP Photo/Ben Margot)

ASSOCIATED PRESS

Oakland Athletics relief pitcher Grant Balfour, top, and catcher Derek Norris celebrate after their 12-5 win over the Texas Rangers in a baseball game, Wednesday, Oct. 3, 2012 in Oakland, Calif. The A's clinch the AL West title with the win. (AP Photo/Ben Margot)

AP

Ohio State wide receiver Corey Brown (10) returns a punt for 76 yards for a touchdown in the second half of an NCAA college football game against Nebraska, Saturday, Oct. 6, 2012, in Columbus, Ohio. (AP Photo/Tony Dejak)

AP

Denver Broncos quarterback Peyton Manning sniffs smelling salts on the sideline in the fourth quarter of an NFL football game against the New England Patriots, Sunday, Oct. 7, 2012, in Foxborough, Mass. The Patriots won 31-21. (AP Photo/Steven Senne)

ASSOCIATED PRESS

New York Giants running back David Wilson reacts after scoring a touchdown against the Cleveland Browns during the second half of an NFL football game Sunday, Oct. 7, 2012, in East Rutherford, N.J. The Giants won the game 41-27. (AP Photo/Julio Cortez)

ASSOCIATED PRESS

Oakland Athletics players celebrate after clinching a wild card berth in the American League at the end of a baseball game against the Texas Rangers on Monday, Oct. 1, 2012, in Oakland, Calif. (AP Photo/Ben Margot)

ASSOCIATED PRESS

Marines from the Marine Barracks of Washington hold folded American flags to be presented to family members during burial services for seven missing U.S. Marines from World War II, Thursday, Oct. 4, 2012, at Arlington National Cemetery, in Arlington, Va. The remains representing the crew buried as a group in a single casket: 1st Lt. Laverne A. Lallathin of Raymond, Wash., 2nd Lt. Dwight D. Ekstam of Moline, Ill., 2nd Lt. Walter B. Vincent, Jr. of Tulsa, Okla., Tech. Sgt. James A. Sisney of Redwood City, Calif., Cpl. Wayne R. Erickson of Minneapolis, Cpl. John D. Yeager of Pittsburgh, Pa., and Pfc. John A. Donovan of Plymouth, Mich. (AP Photo/Carolyn Kaster)

ASSOCIATED PRESS

An unidentified American Airlines passenger reacts while trying to make arrangements after her flight was delayed in Miami, Friday, Oct. 5, 2012. American Airlines says a combination of wear, poor design and even soda spilled into the tracks can cause seats on its Boeing 757s to pop loose during flight. American is canceling 44 flights today after it scrapped 50 flights Thursday because of the seat problem. The airline said Friday that all seat repairs on its Boeing 757 airplanes should be done by Saturday. (AP Photo/J Pat Carter)

ASSOCIATED PRESS

A veterinarian uses a light to check on the eye of an American Flamingo at the Oklahoma City Zoo in Oklahoma City, Thursday, Oct. 4, 2012, during an annual exam. (AP Photo/Sue Ogrocki)