1.   For coca and poppy, traffickers fly into clandestine airstrips.

2.   The agency operates the surveillance flights mainly to find drug-carrying planes, clandestine airstrips, and areas where large amounts of semi-processed cocaine are stored for pickup.

3.   The province has also been a major cocaine smuggling route, with dozens of clandestine airstrips, cocaine processing laboratories and even some coca plantations.

4.   They stepped up ransom kidnappings, extortion and the protection of coca fields, jungle laboratories and clandestine airstrips.

5.   Although Marxist by creed, the FARC is believed to now gain most of its revenues from protecting drug labs and clandestine airstrips.

6.   Although Marxist by creed, the group is believed to now gain most of its revenues from protecting drug labs and clandestine airstrips.

7.   Federal police have found nine clandestine airstrips in Baja California believed used by drug smugglers during the past decade, local media reported Friday.

8.   Federal police said Friday they had found nine clandestine airstrips in Baja California believed used by drug smugglers during the past decade.

9.   He said the drugs are often brought by planes landing on clandestine airstrips in the remote interior, where authorities plan to increase their anti-drug efforts.

10.   Officials believe drug and arms smugglers also operate clandestine airstrips in the area.