United Airlines has canceled a planned 9/11 commemorative flyover in Denver that would have featured a Boeing 777 escorted by four F-16 fighter jets.

The tribute was timed with chilling precision: the United 777 was scheduled to fly over the airline’s Denver Flight Training Center at 9:03 a.m.—the exact time United Flight 175 struck the World Trade Center’s South Tower on September 11, 2001.

The aircraft was originally scheduled to depart Denver International Airport at 8:14 a.m., matching the departure time of UA175 from Boston Logan International Airport.

But the plan quickly raised concerns.

Denver emergency officials began warning residents because a passenger airliner flying in formation with fighter jets could potentially be mistaken for a real hijacking or security incident. Officials estimated that around one million people might need to be notified beforehand.

The city also said it had been informed about the planned flyover rather than formally asked to approve or coordinate it.

United ultimately decided to cancel the event, citing concerns surrounding the proposal and community reaction.

The cancellation means Denver residents will not see the dramatic formation that was intended as a tribute to the 9/11 victims and first responders.

While the intention was to honor those who lost their lives, the combination of a massive Boeing 777 and four F-16s flying over a densely populated metropolitan area would undoubtedly have been loud, highly visible and potentially alarming.

What do you think—was canceling the flyover the right decision, or should the tribute have gone ahead?