The nation mourned its deadliest aviation accident in decades Thursday, a midair crash between a passenger jet and an Army helicopter that killed 67 people in Washington, while President Trump blamed ...

American Airlines Flight 5342 from Wichita, Kansas, was attempting to land when the plane and a Black Hawk helicopter collided.

The nation’s cybersecurity agency has played a critical role in helping states shore up the defenses of their voting systems, ...