Video: US Navy describes Air Asia flight search efforts

Naval Aircrewman 1st Class Joseph Jiardina, assigned to Helicopter Maritime Strike Squadron (HSM) 35, describes how he is supporting Air Asia Flight QZ8501 search efforts and helping to bring closure to families affected by the tragedy.

Natural Grocers to open in Tucson

Natural Grocers by Vitamin Cottage, Inc. will open its first store in Tucson, its fourth in Arizona, on Jan. 20. The store is located at 7220 E. Broadway Blvd.

Natural Grocers will provide the Tucson community with USDA Certified Organic fresh produce and other healthy, affordable natural and organic groceries - a mix of national brands and locally-grown, -raised and -manufactured products from Arizona.

Currently, Natural Grocers has 91 stores in 15 states, employing more than 2,000 people.

The Tucson location is one of 18 Natural Grocers stores expected to open in fiscal year 2015.

Duke Energy asks its customers to reduce electricity use

Duke Energy officials are asking customers to reduce electricity use during the next 24 hours to help avoid potential high-energy demand on the electrical grid caused by frigid temperatures. The low temperatures will put higher stress on mechanical equipment used to generate and deliver electricity. Isolated equipment problems are possible, which could result in unplanned scattered outages.

The most critical time to reduce electricity usage is Thursday between 5 a.m. and 10 a.m.

"The forecasted conditions are very similar to those we experienced last January during the Polar Vortex, and are affecting a large portion of the country," said Nelson Peeler, Duke Energy vice president of transmission system operations. "We currently have sufficient generation resources to meet our customers' energy needs, but we know from experience that conditions can change quickly, and we need to be prepared."

To help lessen energy demand on the power grid during the next 24 hours and reduce the potential for isolated power outages, Duke Energy offers the following tips:

• Reduce your thermostat to the lowest comfortable setting when home, and bump the thermostat down a degree or two when leaving home.
• Turn off unnecessary lighting.
• Postpone household chores that require electrical appliances.
• Unplug cellphone / tablet chargers. These devices draw energy even when not in use.
• Operate ceiling fans in a clockwise direction, which pushes warm air back down into the room.
• Leave your drapes or blinds open to allow the sun's rays to warm the house.

Duke Energy has a detailed plan to manage the power grid in extreme conditions:

• Running all available generation units;
• purchasing power from other utilities.

"If necessary and conditions change, we would need to initiate forced power reductions that would result in rotating or sustained power outages across the grid," Peeler said.

Pennsylvania slot machine revenue up in December

The Pennsylvania Gaming Control Board's monthly slot machine revenue report for December of 2014 shows an increase of 5.82 percent in gross revenue generated over 2013.

According to the report, the play of slot machines at the 12 casinos produced over $10 million more in gross revenue this year, $188,426,686, compared to the $178,059,128 in gross revenue generated in December of last year.

The average combined number of slot machines operating daily was 26,377 in December of 2014 compared to 26,591 in December of 2013.

Gross revenue from slot machine gaming for the 2014 calendar year remained above $2.3 billion. Total revenue for 2014 was $2,319,534,380, 2.7 percent below calendar year 2013 when gross revenue totaled $2,384,098,225.

Tax generated from slot machine gaming in 2014 was $1,239,730,997.

Video: NASA learning to go with the flow over Mojave Desert

This video takes a look at the evolution of various ways NASA has observed flow visualization in aircraft structures over the years. Whether in the lab or flying high over the Mojave Desert, capturing these flow visuals is important for the development of future aeronautical concepts and designs.

General Atomics awarded MQ-9 Reaper retrofit contract

General Atomics, Aeronautical Systems, Inc., Poway, Calif., has been awarded a $43 million contract for MQ-9 Reaper field retrofit. General Atomics will provide retrofit kits for the MQ-9 Reaper Block 1 configuration aircraft with field retrofit capabilities. The work will be performed at Poway and is expected to be completed by July 5, 2017.

This contract award is the result of a sole-source acquisition. Fiscal year 2013 funds in the amount of $27 million and fiscal year 2014 funds in the amount of $16 million are being obligated at the time of award. The contract is being managed by the Air Force Life Cycle Management Center, Wright-Patterson Air Force Base, Ohio.

The General Atomics MQ-9 Reaper (formerly named Predator B) is an unmanned aerial vehicle capable of remote controlled or autonomous flight operations, developed primarily for the U.S. Air Force.

Officials regret not closing Loudoun County schools during snowstorm

After careful consideration of all available information, including advanced weather forecasts and real-time monitoring of road conditions across the county, Loudoun County Public Schools (LCPS) officials made an early morning decision to keep schools open Tuesday. “Clearly, the conditions became far worse than anticipated,” LCPS officials said in a press statement.

“We apologize for the difficulties the weather caused this morning,” Loudoun officials said Tuesday. “Students are safest at school when parents have not had a chance to make alternate plans for their child's return home. At this time, we are planning to dismiss schools at their normal dismissal time. However, all LCPS after-school activities are canceled for this afternoon and evening.

“LCPS regrets any confusion or stress today’s decisions may have caused. Student and staff safety remains our top priority and policy and procedures around closure and delay decision-making will be reviewed and enhanced using lessons learned today.”