it looks like a pretty either efficient operation, which shows this cartel run by arturo beltran leyva, is alive and kicking >> how well publicized was the name of this navy commando? >> well, that's a very good question. the name was publicized, and that's unusual in mexico. because normally, the military soldiers, both navy and army that take part ofn these operations, their identities are kept secret. most wear black masks to hide their identities. when they were killed, the government has up until now released their names and honored them as fallen heroes. the problem this timps revenge was taken. what it would suggest is the drug cartel has informants within the mexican navy that gave them the information as to in man's family's whereaboutss and that's pretty worrisome. >> woodruff: how unusual is it for the cartel to go after family members like this? >> it's very unusual. it sort of breaks one of the unwritten rules of the war on drug down here in mexico. the drug cartels have been getting increasingly violent. they've been resorting to tactics, very similar to the islamic terro

beltran leyva in a shootout with a mexican navy unit. but the mexican war on drugs has been an uphill struggle, with tens of thousands of casualties, and illegal drugs still flowing, especially in the state of sinaloa. that is where global post correspondent yone greeyo just returned from a mission with the mexican army. "global post" is an international news web site. here's his report. >> reporter: deep in the sierra madre mountains. this beautiful landscape in north west mexico hides one of the world's biggest drug producing areas-- the so-called golden triangle. in a rare opportunity, we joined the 94th battalion to see its work fighting drug cartels here. battalion commander general solorzano says it is the only force equipped for this job. as we fly low, soldiers watch for cartel snipers, who have targeted army helicopters with machine guns and even rocket propelled grenades. the soldiers have located a marijuana field, which sticks out because of the bright green leaves of the plants. we touch down and head to the crop. the troops