When a major calamity like an earthquake strikes, your cellphone isn't likely to help you any more than an Internet hookup or a telephone land line. There's a strong chance none of these will work, at least not in the first tumultuous hours after the temblor strikes. That's where REACT, or the Radio Emergency Associated Communication Team, comes in. Dedicated to the use of two-way radio communication with area authorities, government agencies and other organizations, the 12-member Antelope Valley REACT is on call and ready to respond 24 hours a day, 365 days a year, throughout the Antelope Valley and...