Do more U.S. airports need control towers? That's one of the questions that has arisen following a midair collision at an airport in southern Arizona last week.

As investigations into the Arizona mid-air collision continue, debates over air traffic safety, regulation, and infrastructure modernization remain front and center.

A mid-air collision between two planes left at two people dead in Arizona. The cause of the crash is under investigation.

It marks the second fatal incident at an Arizona airport in the past 10 days. On Feb. 10, the pilot of a private jet owned by Mötley Crüe singer Vince Neil was killed after a runway collision between two aircraft at Scottsdale Airport.

A mid-air collision between a Cessna 172S and a Lancair 360 MK II at Marana Regional Airport, Arizona, resulted in two fatalities. The crash, which occurred at 8:28 AM local time, has raised concerns about air safety in uncontrolled fields,

A mid-air collision near Marana Airport in Arizona led to two fatalities and two injuries, prompting investigations by NTSB and FAA.- Watch Video on English Oneindia

Two people died after two small aircraft crashed at an airport in Arizona. A Lancair and Cessna 172 collided mid-air around 8:25am local time at the Marana Regional Airport - an uncontrolled field, meaning it doesn't have an operating air traffic control tower.

Tens of thousands of planes take off, land and perform touch-and-goes at the Marana Regional Airport in southern Arizona every year. Without an air traffic control tower, it's a calculated dance that requires communication by pilots.