Domers respond to Moore, Oklahoma

Seventeen hundred homes were totally destroyed by the tornado at Moore, Oklahoma. But notice the simple, concrete, thin shell, dome storage/tornado shelter — the sole survivor. Monolithic Domes survive tornadoes — schools, churches, homes, etc. Be safe.

Seventeen hundred homes were totally destroyed by the tornado at Moore, Oklahoma. But notice the simple, concrete, thin shell, dome storage/tornado shelter — the sole survivor. Monolithic Domes survive tornadoes — schools, churches, homes, etc. Be safe. (AP Photo/Steve Gooch)

An aerial photo of a neighborhood hit by a massive tornado in Moore, on May 20, 2013.

An aerial photo of a neighborhood hit by a massive tornado in Moore, on May 20, 2013. (AP Photo/Steve Gooch)

An aerial photo of homes hit by the tornado in Moore, Oklahoma, on May 20, 2013.

An aerial photo of homes hit by the tornado in Moore, Oklahoma, on May 20, 2013. (AP Photo/Steve Gooch)

An aerial photo showing damage to Plaza Towers Elementary School after it was hit by a massive tornado in Moore, on May 20, 2013. Rescue workers and a helicopter can be seen at lower right.

An aerial photo showing damage to Plaza Towers Elementary School after it was hit by a massive tornado in Moore, on May 20, 2013. Rescue workers and a helicopter can be seen at lower right. (AP Photo/Steve Gooch)

Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, on May 20, 2013.

Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, on May 20, 2013. (AP Photo/Sue Ogrocki)

A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School, on May 20, 2013.

A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School, on May 20, 2013. (AP Photo/ Sue Ogrocki)

A woman walks through what remains of a bowling alley, and other buildings, after a huge tornado struck Moore, near Oklahoma City, on May 20, 2013.

A woman walks through what remains of a bowling alley, and other buildings, after a huge tornado struck Moore, near Oklahoma City, on May 20, 2013. (Reuters/Richard Rowe)

An aerial photo shows the remains of tornado-damaged houses in Moore, on May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

An aerial photo shows the remains of tornado-damaged houses in Moore, on May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)

Flipped vehicles are piled up outside the heavily damaged Moore Medical Center on May 20, 2013.

Flipped vehicles are piled up outside the heavily damaged Moore Medical Center on May 20, 2013. (Brett Deering/Getty Images)

This aerial photo shows the remains of homes, after being flattened by a massive tornado in Moore, Oklahoma, on May 20, 2013.

This aerial photo shows the remains of homes, after being flattened by a massive tornado in Moore, Oklahoma, on May 20, 2013. (AP Photo/Steve Gooch)

The hood of car is wedged into the front window of the Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013.

The hood of car is wedged into the front window of the Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013. (Brett Deering/Getty Images)

An aerial photo of a section of Moore struck by the massive tornado on May 20, 2013.

An aerial photo of a section of Moore struck by the massive tornado on May 20, 2013. (AP Photo/Steve Gooch)

An aerial photo of a neighborhood in Moore destroyed by the massive tornado on May 20, 2013.

An aerial photo of a neighborhood in Moore destroyed by the massive tornado on May 20, 2013. (AP Photo/Steve Gooch)

A vehicle lies upside down in the road after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma.

A vehicle lies upside down in the road after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (Brett Deering/Getty Images)