Sen. Elizabeth Warren wants to know if the DOD has considered the effects on troops' dental health if communities don't add fluoride to drinking water.
Authorities say two people have died and multiple others were injured when a private jet crashed into military housing in San Diego during foggy weather.
About 130 U.S. soldiers are returning to their bases after being deployed to a remote Alaska island amid a spike in Russian military activity in the area.
Russian military planes and navy vessels, including two submarines, have come close to Alaska in the past week as Russia and China conducted joint drills.