61.   Air routes disrupted, drug pilots turn to short, low-altitude flights using a network of jungle airstrips.

62.   An agreement on air cargo routes was reached in March.

63.   As the number of South Korean tourists to Macau increased rapidly, Macau and Seoul opened a direct air route last year under a tentative agreement.

64.   Aside from local air traffic, the volcano is located between the heavily traveled air routes connecting New York to Rio de Janeiro and New York to Buenos Aires.

65.   Because of increased success in cutting air routes between Peru and Colombia, drug traffickers have been relying more on the waterways to keep their product moving.

66.   Both sides have threatened to impose sanctions if a deal is not reached on the bilateral treaty that regulates air routes between the two countries.

67.   China plans later this year to negotiate with the United States, Australia, South Korea and Germany on adding new air routes and capacities, Wang said.

68.   Clinton did not venture from the heavily-secured installation to witness damage wrought during nearly four years of war, and his air routes carefully skirted Serb territory.

69.   During her visit, the two countries will sign an agreement for air services as a first step towards establishing a direct air route, the officials said.

70.   First to move would be the air controller teams, which must establish ground communications at various places along the air route in order to coordinate refueling operations.