PITTSBURGH -- Authorities say a slain pregnant woman may have been alive and was possibly drugged when a baby was ripped from her womb, allegedly by a woman who tried to pass the infant off as her own.

Her partially decomposed remains were in the master bedroom of Andrea Curry-Demus, 38, who was charged Sunday with homicide, unlawful restraint and kidnapping, officials said.

Authorities said Curry-Demus, who served prison time in the 1990s for snatching a 3-week-old baby girl from a hospital, took the baby boy to a Pittsburgh hospital and claimed that it was her own.

Authorities said Johnson was 36 weeks pregnant. Allegheny County Police Superintendent Charles Moffatt said a "very sharp instrument" was used to cut open her belly.

Allegheny County medical examiner Dr. Karl E. Williams told the Pittsburgh Tribune-Review he couldn't be sure whether the woman was alive when she was cut open, although the baby could not have survived long inside the mother after she died.

"There is a certain window of opportunity," Williams said. "The baby is depending on the mother being alive."

MAPLEWOOD, Mo. -- Firefighters became victims of what appeared to be an ambush Monday when they were fired upon from a house as they worked to put out a vehicle fire across the street, police said. One young firefighter was killed, two police officers were wounded and the house where the shots were fired later burned to the ground.

It was unclear Monday afternoon whether the gunman died in the house fire; authorities were searching the remains of the brick bungalow, St. Louis County police spokeswoman Tracy Panus said.

"The suspicion is he's in there," Panus said. "He didn't get away. We have no indication he got out of the house."

Little was known about the man who lived in the house in Maplewood, a suburb just southwest of St. Louis. Neighbors described him as quiet and reclusive.

Someone began firing shots from the house when firefighters arrived in response to a 5:40 a.m. report of a pickup truck fire.

The city identified the slain firefighter as 22-year-old Ryan Hummert, son of former Maplewood Mayor Andy Hummert. Officials said he was shot to death as he got off the fire truck.

The firefighter had graduated from paramedic training in August and from the fire academy in March.

ORLANDO, Fla. -- The grandmother of a 2-year-old girl missing since early June said Monday the girl's mother, jailed after police said she failed to report the disappearance for more than a month, knows who has the toddler.

A lawyer for the Orlando girl's mother, Casey Anthony, said his client wants to help investigators and urged authorities to release her.

Anthony, 22, was arrested last week after telling authorities her daughter Caylee Marie Anthony had been missing since June 9. Casey Anthony was charged with child neglect and criminal obstruction for allegedly lying to detectives.

Her mother, Cindy Anthony, said Monday on NBC's "Today" her daughter should be released so she can help detectives.

"I know Casey knows who has her," she said. "I know Casey doesn't know where they're at right at the moment. But I don't know anything else right now because I can't speak to my daughter. And we're trying to get that changed very quickly."

Casey Anthony's lawyer, Jose Baez, said his client wants to cooperate with authorities.

COLUMBIA, S.C. -- A suburban South Carolina mother who admitted burning down four homes near her neighborhood has been sentenced to more than a decade in prison.

Kimberly Wooten was sentenced to 15 years in prison Monday. Two of those years have been suspended by a judge and she also received credit for time served.

The 42-year-old mother of two pleaded guilty but mentally ill in June to seven counts of second-degree arson and other charges related to the fires.

Wooten's attorney says she had an irresistible impulse to start fires. Her plea meant she knew right from wrong, but couldn't conform her behavior to the law.

The fires were set over two weeks in 2006 in Irmo, a suburb of Columbia.

Texas, Mexico prepare for Dolly

McALLEN, Texas -- Residents along the Texas-Mexico border kept a watchful eye on Tropical Storm Dolly on Monday, stocking up on plywood, generators and flashlights as forecasters predicted the storm would strengthen into a hurricane later this week and make landfall.

The storm was expected to bring high winds and dump 10 to 20 inches of rain in coastal areas near the U.S.-Mexican border. Emergency officials feared major flooding problems and urged coastal residents to prepare.

Shell Oil said it was evacuating workers from oil rigs in the western Gulf Of Mexico, and the federal government was trying to decide whether they could begin construction on a new border fence, which was to be combined with levee improvements along the Rio Grande in Hidalgo County.

The National Hurricane Center in Miami issued a hurricane watch from Brownsville north to Port O'Connor.

Mexico also announced a hurricane watch from Rio San Fernando north to Matamoros and the U.S. border.

Dolly was expected to make landfall Wednesday as a Category 1 storm with sustained winds of 74 mph to 95 mph.

Texas officials said they wouldn't order evacuations along the coast unless Dolly strengthens to a Category 3, with sustained winds of at least 111 mph.

HONOLULU -- An Air Force B-52 bomber crashed off Guam on Monday morning, killing at least two airmen and leading to an ocean search the remaining four crew members, the military said.

Six vessels, three helicopters, two F-15 fighter jets and a B-52 bomber were involved in the search, which had covered about 70 square miles of the Pacific, said Coast Guard spokeswoman Lt. Elizabeth Buendia.

"We have an active search that's going to go on throughout the night," she said. The Navy, Coast Guard, Air Force and local fire and police departments were involved.

Maj. Stuart Upton, a Pentagon spokesman, said the aircraft was unarmed.

The B-52 bomber was en route from Guam's Andersen Air Force Base to conduct a flyover in a parade on another part of the island when it crashed around 9:45 a.m. Monday about 30 miles northwest of Apra Harbor, the Air Force said.

The Liberation Day parade celebrates the day the U.S. military arrived on Guam to retake control of the island from Japan.

The Air Force said a board of officers will investigate the accident.

PHILADELPHIA -- A federal appeals court on Monday threw out a $550,000 indecency fine against CBS Corp. for the 2004 Super Bowl halftime show that ended with Janet Jackson's breast-baring "wardrobe malfunction."

The three-judge panel of the 3rd U.S. Circuit Court of Appeals ruled that the Federal Communications Commission "acted arbitrarily and capriciously" in issuing the fine for the fleeting image of nudity.

The 90 million people watching the Super Bowl, many of them children, heard Justin Timberlake sing, "Gonna have you naked by the end of this song," as he reached for Jackson's bustier.

The court found that the FCC deviated from its nearly 30-year practice of fining indecent broadcast programming only when it was so "pervasive as to amount to 'shock treatment' for the audience."

"Like any agency, the FCC may change its policies without judicial second-guessing," the court said. "But it cannot change a well-established course of action without supplying notice of and a reasoned explanation for its policy departure."

The 3rd Circuit judges -- Chief Judge Anthony J. Scirica, Judge Marjorie O. Rendell and Judge Julio M. Fuentes -- also ruled that the FCC deviated from its long-held approach of applying identical standards to words and images when reviewing complaints of indecency.

"The Commission's determination that CBS's broadcast of a nine-sixteenths of one second glimpse of a bare female breast was actionably indecent evidenced the agency's departure from its prior policy," the court found. "Its orders constituted the announcement of a policy change -- that fleeting images would no longer be excluded from the scope of actionable indecency."

In a statement Monday, CBS said it hoped the decision "will lead the FCC to return to the policy of restrained indecency enforcement it followed for decades."

"This is an important win for the entire broadcasting industry because it recognizes that there are rare instances, particularly during live programming, when it may not be possible to block unfortunate fleeting material, despite best efforts," the network said.

The FCC did not immediately respond to a request for comment.