A dog licks its nose in front of a Ukrainian Mi-24 combat helicopter in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
A Ukrainian Mi-24 attack helicopter flies towards Russian positions during a combat mission in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
A Ukrainian serviceman refuels an Mi-24 combat helicopter between fighting with Russian troops in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
Ukrainian Mi-24 and Mi-8 helicopters fly towards Russian positions during a combat mission in Donetsk region, Ukraine, Sunday, March 19, 2023. (AP Photo/Evgeniy Maloletka) 
Ukrainian Mi-8 and Mi-24 combat helicopters prepare for landing between the fighting with Russian troops in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
A Ukrainian pilot prepares for a flight on his Mi-24 attack helicopter during during a combat mission in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
Ukrainian Mi-8 combat helicopters take off towards Russian positions during a combat mission in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka) 
In this image taken from video on Monday, March 20, 2023, a Ukrainian Mi-24 attack helicopter fires missiles towards Russian positions during a combat mission in Donetsk region, Ukraine. (AP Photo/Evgeniy Maloletka) 
A Ukrainian pilot waves to his comrades from an Mi-8 combat helicopter during a combat mission in Donetsk region, Ukraine, Saturday, March 18, 2023. (AP Photo/Evgeniy Maloletka)
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