Retired Southwest Airlines pilot helmed the unresponsive plane in sonic boom over D.C.

Jeff Hefner’s career with the Dallas-based carrier spanned 25 years and more 25,000 hours of flying experience.The pilot of a private plane that flew over the nation’s capital amid a military jet-caused sonic boom was a retired Southwest Airlines captain with more than 25,000 hours of flying experience, according to The Washington Post. The pilot,…