The phrase "a checkpoint in a" is correct and usable in written English.
It can be used when referring to a specific location or stage in a process, often in contexts like travel, security, or project management.
Example: "The team reached a checkpoint in a long series of evaluations before finalizing the project."
Alternatives: "a milestone in a" or "a stage in a".
The attack was believed to be revenge for an episode last month in which troops killed a drug baron, Ali Abbas Jaafar, and an aide after they escaped a checkpoint in a stolen car.
ISLAMABAD, Pakistan — More than 100 Taliban militants attacked a checkpoint in a tribal region in northwest Pakistan early Monday, Pakistani military and security officials said, firing rockets and mortars before being repulsed in a long gun battle.
The capture of Abu Anas also coincided with a fierce gunfight that killed 15 Libyan soldiers at a checkpoint in a neighborhood southeast of Tripoli, near the traditional home of Abu Anas's clan.
Kabul's police chief, Gen. Mohammed Ayoub Salangi, said the suspect was trying to pass through a checkpoint in a Toyota sport utility vehicle when he was recognized by agents from the country's intelligence service, the National Directorate of Security.
Rather than being the target of a military operation, he appeared to have blundered into a checkpoint in a part of Mogadishu controlled by the government and was killed in a firefight.
BAGHDAD — Four Awakening Council members were found dead early Tuesday, apparently killed as they stood guard at a checkpoint in a northern neighborhood of the capital, the police said, in a continuation of the escalation of violence against them in recent weeks.
There, Taliban attackers killed 10 Afghan National Army soldiers during an ambush at a checkpoint in an hourlong firefight that also left 4 soldiers wounded and 11 Taliban fighters dead.
A pro-Russian separatist at a checkpoint in the northern outskirts of city of Donetsk.
On Thursday, three Awakening Council fighters guarding a checkpoint in Hawija, a volatile town north of Baghdad, were wounded in a drive-by shooting, said Capt.
At the time, she was resting, along with her team, at a checkpoint in Unalakleet, a village about 220 miles, or three days, from Nome.
On Thursday night, at a checkpoint in East Jerusalem, an Israeli policeman was killed and a policewoman wounded, and Palestinian militants were suspected.
