We were told by the pro-Russian rebels, who guided us, and other journalists, that things were quiet in the village of Shyrokyne, near the strategic port city of Mariupol.
But within minutes of arriving, there are loud explosions.
A man lies seriously wounded on the ground. He's bleeding badly from the head.
We learn he's called Andrei and is a journalist working for Russia's military TV channel.
A member of the BBC's team starts to treat him. He's joined by two medics from the OSCE.
Andrei has lost a lot of blood and his body is shaking violently as he goes into shock.
A local woman is screaming hysterically, as blood stains the pavement outside the local shop where he's now lying, and the journalists brought to monitor this peace mission crowd around.
The three men treating Andrei manage to stem the bleeding, but there are then exchanges of gunfire nearby.
What sound like rocket propelled grenades are also fired.
There is no ceasefire here, even when the OSCE are in the village.
The BBC-OSCE team gets Andrei into an old green Soviet-era van, and he is driven away to the local hospital.
Later we learn he is still alive, but in a serious condition.
His colleague tells us that Andrei said he needed the toilet. When he walked behind the shop, we believe he triggered a booby trap.
It was a short walk that might have cost him his life, and it was a reminder of how volatile the ceasefire agreement is here.
Later we meet two elderly women who are still living in this village on the frontline. Their eyes quickly fill with tears - this is a common scene in eastern Ukraine.

Made during the reign of King David I of Scotland, the penny was unearthed by a metal detector in a field in the north of England.
Experts think it could fetch between Â£8,000 and Â£12,000 when it goes up for auction on 22 September.
The penny bears the head of King David I, who ruled Scotland from 1124 to 1153.
It is thought to have been struck some time after the Scots invaded England in 1136 to intervene in a civil war over the English throne.
The coin will be auctioned in London by international coin specialists Dix Noonan Webb, and the auctioneers have described it as very important.
It is one of the first to be struck bearing the head of a Scottish monarch and represents a key moment in the development of independent Scotland.
The 54-year-old metal detectorist who found it has asked not to be named.
He discovered the coin in a field in County Durham, on the site of a long-lost medieval village after he was given permission to search the area two years ago.
He also turned up pennies from the reigns of English kings Edward I and Edward III as well as Elizabethan coins, two modern gold rings and a large number of bullets.
The coin was almost certainly dropped in the medieval village which, in the 12th Century, was in an area of Northumbria granted to David I under the Treaty of Durham in 1139.
It may, therefore, have lain in the soil for almost 900 years.
Hiram Brown, of the Edinburgh Coin Shop, told BBC Scotland: "This coin is unique because it has an Edinburgh side with David on it, and the other side is Carlisle. It was probably struck in Carlisle.
"David and his son Prince Henry attacked Carlisle and took over silver mines in that area and struck coins.
"They went on to strike coins in many places in Scotland."
This was supposed to be a mission to monitor the ceasefire by a team from the Organisation for Security and Co-operation in Europe (OSCE).
[NEXT_CONCEPT]
One of the earliest coins ever minted in Scotland is going under the hammer.