
In Nawa, Marines met with about 20 Afghan men and boys, seeking to reassure them that the Americans wanted to protect them from the Taliban.
"Are you going to enter our houses?" asked Mohammad Nabi, 25, who was there with five of his younger brothers. "We are afraid that you will leave, and the Taliban will come back."
They also complained that local police were thieves not to be trusted.
Marine officers promised not to enter homes and said they would remain in the area to keep out the Taliban.
One elder with a gray beard asked the Marines whether they would prevent residents from saying Muslim prayers. The troops assured him they would not.
In one village near Nawa, however, the atmosphere was tense.
"When we asked if they had a village elder or mullah for the American commander to talk to, the answer was no," said Capt. Drew Schoenmaker, a Marine company commander. "It's fear of reprisal. Fear and intimidation is one thing the enemy does very well."
Taking territory from the Taliban has always proved easier than holding it. The challenge is especially great in Helmand because it is a center of Afghanistan's thriving opium production, and drug profits feed both the insurgency and corrupt government officials.
On Wednesday, a British lieutenant colonel was killed in an explosion in Helmand. Lt. Col. Rupert Thorneloe, commander of the 1st Battalion Welsh Guards, was the highest-ranking British officer killed in Afghanistan.
A Canadian soldier, 30-year-old Cpl. Nicholas Bulger, was killed Friday in Kandahar province after his vehicle struck an improvised explosive device, the Canadian military said. Five other soldiers were hurt.
The missile attacks in Pakistan on Friday occurred about 620 miles (1,000 kilometers) east of Helmand in the rugged South Waziristan region, according to two officials who spoke on condition of anonymity because they were not authorized to release the information.