Kaidan Alenko was tired, in pain, hungry, dirty, and confined. He sat in a cell in some sort of underground containment area, but it felt like a prison. It was makeshift, though, but maybe the batarians wanted a prison. Hell if he knew.
He'd been on a mission to recover a kidnapped scientist, but when he entered the base he discovered her already dead, and the batarians shot and disabled Kaidan, before healing him and making their intentions clear: war with humanity. Claims of his old Commander blowing up a colony seemed far-fetched at first, but soon became a possibility when the mention of reapers came up.
Kaidan knew Shepard would do what had to be done. If killing a batarian colony weakened the reapers, or delayed them, he could see the justification in that, even if it wasn't something he personally would do. That is, of course, if Shepard had a choice.
Recalling the last time the two had even talked, Kaidan regretted greeting his former Commander with hostility and being so quick to reject his mission and the reasons behind Shepard working with Cerberus. But it slowly began to make sense, and Alenko could see where his disdain for Cerberus interfered with understanding Shepard's true intentions.
After sitting on this cell for several days, with an occasional interrogation or beating, Alenko had all but given up hope. He had some bruises and cut marks, and had a nice beard growing in, from being unable to shave or clean himself. He'd only attempted to escape once, and it failed after he'd tried to take out a guard. Now, he sat in a cell with nothing to do, waiting for his next minimal meal, or to be kicked around like a dog.
He thought he heard distant gunfire, but he just assumed it was either nothing important, or his mind offering false hope. When a large explosion shook the ground above him, however, Kaidan decided something is going on, and if he can seize the opportunity to escape, he will. Maybe the Alliance had sent someone to rescue him!
After a moment of silence, the batarian commander that had personally administered most of Kaidan's beatings and interrogations came marching down the hall, with 2 of his best guards. He opened the cage, and his two captains grabbed Kaidan by the arms, forcing him down the hall toward the interrogation room.
"Hey!" Kaidan shouted, struggling against the grip of the batarian captains, but it was to no avail. "Let me go, you crazy bastards!" He shouted flailing about wildly, trying to somehow escape with what little energy he had left.
They carried him to the interrogation room, and strapped him into the chair he'd been in twice before. The batarian commander slammed the end of the rifle into Kaidan's stomach, causing the wind to be knocked out of him.
"Now listen here, scum, " the batarian started, "shut your mouth, and you just might make it out of this alive."
The captain left the interrogation room, leaving Kaidan alone, with desperate thoughts that whoever was attacking the base delivered a shot right into the batarian Commander's head.