The villagers had congregated at the tent, as they often did at the end of the workday, to sit and chat.
Among them were men who sold vegetables or wood. Others mined or traded minerals used to make alloys like stainless steel.
They were husbands and fathers, brothers and sons.
But unlike villagers who might gather like this in many other parts of the world, these men had strange company at their customary get-together.
They were living in North Waziristan, one of Pakistan's thinly governed tribal areas bordering Afghanistan and a hotbed of militancy.
Hanging above them in the evening sky were four remotely piloted aircraft. Drones.
Without warning, the aircraft unleashed a volley of missiles that struck the tent, killing eight people.
A few minutes later, after other villagers had approached the wreckage to help the victims, the drones fired again, deepening the carnage.
By the end, 18 people were dead, including at 14-year-old boy, and 22 others were wounded, including an 8-year-old girl.
"Body parts were scattered everywhere. Bodies without heads and bodies without hands or legs," said Ahsan, a miner and local resident who had been praying at the time of the first wave of missiles.
'Will I Be Next?'
Ahsan's account of the attack in the village of Zowi Sidgi in July 2012, along with those of other witnesses and victims' relatives, form part of a report released Tuesday by Amnesty International titled "'Will I Be Next?' U.S. Drone Strikes in Pakistan."
The report provides detailed information on nine out of 45 drone strikes it says were carried out by the United States in North Waziristan between January 2012 and September 2013.
In some of the attacks, it says, the victims weren't members of militant groups like al Qaeda or the Taliban, but just ordinary civilians, like the workers in Zowi Sidgi.
It recounts another strike, in October 2012, in which a 68-year-old woman, Mamana Bibi, was blown apart by a drone as she picked vegetables in front of her grandchildren, several of whom were injured in the attack.
"Amnesty International is seriously concerned that these and other strikes have resulted in unlawful killings that may constitute extrajudicial executions or war crimes," the report said.
Mustafa Qadri, Amnesty International's Pakistan researcher, said that while war crimes have possibly been committed, that cannot be confirmed without more information from the U.S. government.
Leaders due to meet
Made public the day before Pakistani Prime Minister Nawaz Sharif is due to meet U.S. President Barack Obama in Washington, the report calls for a series of measures to bring the drone program in line with international law.
Those include conducting impartial investigations into the cases documented, bringing those responsible for human rights violations to justice and offering compensation to civilian victims' families.
On Tuesday, Sharif was at the United States Institute of Peace in Washington.
"Recently our political parties in a national conference declared the use of drones is not only a continued violation of our territorial integrity but also detrimental to our resolve at efforts in eliminating terrorism from our country," Sharif said.
"This issue has become a major irritant in our bilateral relationship as well. I therefore would stress the need for an end to the drone attacks."
Sharif has previously called for an end to the U.S. drone program in Pakistan, where it has stirred deep anger, and will raise the issue with Obama on Wednesday, said Aizaz Ahmad Chaudhry, a spokesman for the Pakistani Foreign Ministry.
"The government of Pakistan believes drone strikes are against international law and the sovereignty of Pakistan," Chaudhry told CNN. "Drone strikes are counterproductive to fighting terrorism."