Ubiquity of GPS
• More than 1 billion GPS receivers are used by consumers and businesses to get around.
• ATMs and Wall Street traders use super-accurate atomic clocks on the GPS satellites to time-stamp transactions.
• GPS signals can direct “smart bombs” to within a few yards of the target.
• Two dozen satellites orbiting in formation constitute GPS.
• Los Angeles Air Force Base in El Segundo developed GPS and is overseeing the upgrade.