Air safety is under scrutiny following two recent incidents: an American Airlines flight evacuated in Denver after its landing gear caught fire, and a Southwest Airlines jet experienced a dramatic 500-foot plunge mid-air to avoid another aircraft on its way to Las Vegas.

Two Southwest Airlines flight attendants were hurt after pilots were alerted to another aircraft in the area when ascending from Burbank Airport.

A Southwest Airlines flight from Burbank made an emergency descent of 475 feet to avoid colliding with another aircraft before safely landing in Las Vegas on Friday.

Two Southwest Airlines flight attendants are being treated for injuries after crew members received two onboard traffic alerts that forced the plane to descend dramatically.

Two flight attendants were injured after pilots responded to an onboard alert about another aircraft in its vicinity.

"Delta will fully cooperate with authorities as the circumstances around this flight are investigated," a Delta spokesperson said.