A bipartisan pair of senators on Monday called on the Federal Aviation Administration (FAA) to "swiftly publish" a proposed rule for remote identification of unmanned aircraft systems, otherwise known as drones.

Remote identification rules would enable the public, the FAA and law enforcement to identify and track drones and their operators in flight.

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Sens. Ed Markey Edward (Ed) John MarkeyDemocrats shoot down talk of expanding Supreme Court Schumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Democrats see fundraising spike following Ginsburg death MORE (D-Mass.) and John Thune John Randolph ThuneOvernight Defense: Stopgap spending measure awaits Senate vote | Trump nominates former Nunes aide for intelligence community watchdog | Trump extends ban on racial discrimination training to contractors, military Remote work poses state tax challenges Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.D.) said in a letter Monday to Transportation Secretary Elaine Chao Elaine Lan ChaoChick-fil-A drops fight for San Antonio airport location Overnight Defense: US marks 19th anniversary of 9/11 attacks | Trump awards Medal of Honor to Army Ranger for hostage rescue mission | Bahrain, Israel normalizing diplomatic ties Trump marks 9/11 with moment of silence on Air Force One, remarks in PA MORE that there have been several drone sightings in “safety-sensitive areas” in recent months that have “underscored the need to quickly adopt and implement remote identification.”

They pointed to drone sightings that have caused delays at London's Gatwick and Heathrow airports, as well as at Newark Liberty International Airport in New Jersey.

They also noted that a drone flew over Fenway Park last week during a baseball game between the Boston Red Sox and Toronto Blue Jays.

"Remote identification will enhance safety, security, and privacy, and serve as a critical tool for law enforcement to respond to and address reports of illegal and unauthorized drone operations," Thune and Markey wrote in the letter.

Markey and Thune in their letter also requested that Chao provide them with a written response "detailing what steps must be taken between now and July 21 for the FAA to release” a proposed rule for remote identification.