Firefighters work through the night early Tuesday July 24, at the Fairfield Creek fire near Springview, Neb. The sprawling fire, sparked Friday by lightning, had charred at least 50,000 acres by Monday morning and it wasn't clear how much of the fire had been contained.

Firefighters plan an attack early Tuesday July 24, at the Fairfield Creek fire near Springview, Neb. The sprawling fire, sparked Friday by lightning, had charred at least 50,000 acres by Monday morning and it wasn't clear how much of the fire had been contained.

A plane drops fire retardant Monday July 23, at the Fairfield Creek fire near Springview, Neb. The sprawling fire, sparked Friday by lightning, had charred at least 50,000 acres by Monday morning and it wasn't clear how much of the fire had been contained.

A Nebraska National Guard helicopter flies to drop water Monday July 23, at the Fairfield Creek fire near Springview, Neb. The sprawling fire, sparked Friday by lightning, had charred at least 50,000 acres by Monday morning and it wasn't clear how much of the fire had been contained.

Dick Callfield uses a cell phone on horseback while trying to get some cattle moved to a clear pasture Monday July 23, at the Fairfield Creek fire near Springview, Neb. The sprawling fire, sparked Friday by lightning, had charred at least 50,000 acres by Monday morning and it wasn't clear how much of the fire had been contained.

Michael Phelps competes in preliminary heat 10 of the Men's 400 m Individual Medley during the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center in Omaha, Neb. on June 25, 2012.

Peter Vanderkaay swims in the men's 400-meter freestyle preliminaries.

William Nicely, from left, David Ingraham, Nolan Tesone and Stephen Schmuhl swim in the men's 400-meter individual medley preliminaries.

Paul Kenner of Wood Lake isn't able to rope a calf as he and others corral and separate young calves from their mothers before participating in a branding at the Burdick Ranch south of Wood Lake, Neb., on Saturday, April 21.

Trent Leichleiter, of Tekamah, Neb., at right, and Kolton Fleischman, also of Tekamah, hold down a calf as Terry Burdick, at left, injects a shot, at the Jim Morris Ranch south of Wood Lake, Neb., on April 22.

A 1908 photo of the town of Monowi.

Abandoned Louisa Street in Monowi is seen completely grown over with vegetation on April 28. At its peak in the 1930s the town had 150 residents but after the railroad left it began to decline.

An unidentified student is framed by a door at Millard South high school in Omaha, Neb., Friday, Jan. 7. Classes resume Friday at the school where a 17-year-old shot two administrators, killing one, before fleeing and committing suicide. At left is Millard Superintendent Keith Lutz.

Millard South High School students hold a candle light vigil in front of the school Thursday Jan 6, 2011 in Omaha, Neb. A student opened fire, killing the assistant principal and wounding the principal on Wednesday.