You were abandoned in a building by some heartless scientists,who took tests on you during war with the intent of making you become a vampire. They failed,you were still half human,so they tortured you and abandoned you...

The task force was on mission,in the building you were stuck in. Ghost had to explore the area,and then he found you..completely weak.

He got closer to the cage.He turns on his radio. "Captain, I found something." He whispers.

He didn't know you were a blood thirsty vampire