The United States’ streak of more than 15 years without a major fatal airline crash came to a shocking end this week when a regional jet collided with a U.S. Army helicopter and revived lingering concerns about gaps in safety procedures.

Two aviation experts interviewed by Vox News — University of North Dakota's Daniel Adjekum and University of Nevada, Las Vegas's Dan Bubb — agreed that, despite a string of recent crashes, travelers should consider air travel to be safe.

Questions are mounting in the wake of the devastating plane crash near Washington DC, which claimed the lives of 67 people on Wednesday night (January 29).

The midair collision that killed dozens of people over Washington, DC, is still being investigated. It’s the latest in a string of air accidents that, globally, have left several hundred dead.

The mid-air collision between an American Airlines regional jet and a U.S. Army helicopter near Washington’s Reagan National Airport was a shock to the nation. It may have been even more shocking because, over the last 25 years crashes involving U.S. commercial aircraft have been extremely rare.

Daniel Bubb, a commercial aviation expert, said it was hard to understand how the passenger jet and military aircraft collided near Reagan Airport. ‘It's a clear night. How can you not see the plane?,’ he asked.

Following a deadly crash between an airplane and an army helicopter in Washington D.C., there are new questions about the job of an air traffic controller. It’s considered one of the most stressful jobs according to Dan Bubb, an aviation expert and professor at UNLV.

Authorities are yet to determine what caused a collision between a US Military helicopter and a passenger jet over Washington DC. The crash is the worst air disaster in the United States for more than 20 years. An extensive search for bodies in the Potomac River continues after US officials confirmed there were no survivors