What does hrr stand for?
hrr stands for "Helicopter Rapid Refueling"
How to abbreviate "Helicopter Rapid Refueling"?
"Helicopter Rapid Refueling" can be abbreviated as hrr
What is the meaning of hrr abbreviation?
The meaning of hrr abbreviation is "Helicopter Rapid Refueling"
What does hrr mean?
hrr as abbreviation means "Helicopter Rapid Refueling"
