Original sentence: Both bombs were still active, and it took a number of days to deactivate them, which was very risky work, proven on the 24th May when Antelope sank after an unexploded bomb detonated while experts were attempting to deactivate it.Two bombs hit Argonaut, but neither exploded, though unfortunately one of the unexploded bombs killed two sailors when it entered the ship's Sea Cat missile magazine, detonating two missiles
Edited sentence: Both bombs were still active, and it took a number of days to deactivate them, which was very risky work, sadly proven on the 24th May when Antelope sank after an unexploded bomb detonated while experts were attempting to deactivate it.Two bombs hit Argonaut, thankfully neither exploded, though sadly one of the unexploded bombs killed two sailors when it entered the ship's Sea Cat missile magazine, detonating two missiles