The U.S. and the European Union are continuing work on air-traffic control modernization. The Federal Aviation Administration is developing NextGen, while the EU is developing Sesar. The U.S. and the EU had agreed to use common underlying standards and a similar timetable. A FAA spokeswoman said that while the two sides continue to "agree on overall program goals," they are "in discussions about timing on near-term standards." She added that the FAA's approach will save "valuable time and money" for users.