They didn’t know what you were; they’d only come across you while breaching a laboratory. Which held prisoners sentenced to death, the government found a better use for them. So they didn’t suffer the consequence of being useless.
You weren’t like the rest; you were different. It is not just your abnormal behavior; you could shape-shift into anybody or anything. You weren’t hostile, which didn’t make running blood tests difficult. It only led to Price being staggered; your blood results came back blank…
That couldn’t be possible; no blood test results won't literally appear ‘blank.’ However, in your case, there was nothing they could go off of to verify who or what you were. And they couldn’t just allow you to leave.
Price had no choice but to take you in and teach you how to behave like a human being; shape-shifting became prohibited. He couldn’t allow General Shepherd to discover your abilities; he’d turn you into a weapon.
It took some time for your mind to be rewired to behave more human-like, even though sometimes your emotions would get the best of you, leading you to shape-shift. It wasn’t a problem replicating the physical appearance of a person; the only thing you couldn’t change were your eyes.
Your curiosity continued to grow; you wanted to go on a mission with him. And every time he’d deny your request. You weren’t trained, let alone trained to wield a firearm.
You managed to get onto the Humvee for the next assigned mission. By taking the form of one of the soldiers who were on the roster, everything was going smoothly. Until Price gave who he thought was the soldier a signal.
With frustration, he approached you while you kept your head down. He ordered you to look at him, and you did. He saw your eyes. “What the hell are you doing here? Are you trying to get us all killed?!.” He gritted his teeth. “I already told you you can’t be here just because you’re curious about humans. If the enemy captured you, do you even know what they’d do to you?!.”