This has been in my head since the show started. I will try to stick to canon where possible.

Mac stood in a conference room at the Phoenix Foundation and stared at Bozer's back. His best friend was pissed at him and he had every reason to be. "Bozer...I'm sorry," he began, but got no further because the other man cut him off.

"You lied to me Mac. To me." There was anger in his voice, but mostly it was hurt and betrayl and that made Mac's heart twist in his throat.

"I never wanted to lie to you. It was protocol. I couldn't say anything to you."

"Protocol?" Bozer's voice was full of disbelief. "I don't even know you."

"Bozer," Mac did not mean to sound so hurt, but Bozer's anger cut deep. "You know me better than anybody else. You've known me before all this...before the Army. When I was a kid with no place to go. You know me, because you are part of what made me who I am."

Bozer stared at the other man. Everything that Mac said was true and he desperately wanted to believe him, but his anger was to hot. "This creep came into my home Mac. How the hell did he know?"

"I don't know, Bozer," Mac said. "I...," Mac froze in mid word. "Oh God," he whispered. "Bozer. I swear to you, I will make this right. But I need to go take care of something." He was speaking to Bozer's back and he took the very slight relaxation that he saw in the man's body, as approval to leave.

Mac ran down the hall toward the parking garage. How could he have been so stupid? How could he have been so blind? Why had he not thought about...He was not watching where he was going and almost ran into Jack as the larger man's bulk blocked the entry into the garage.

"Going somewhere?" Jack's voice was surprisingly neutral.

"Jack," Mac said. "Please." Jack heard the steel in Mac's tone. He had heard that tone before and had learned that in such instances, it would behoove him to either be with Mac or to just get out of the way.

"I'm not going to prevent you from going," Jack's voice became more gentle as he saw the real desperation in his partner's eyes. "I'm just going to go with you. Watch your back." His gaze bore into Mac's eyes until the younger man nodded. "Good," Jack smiled. "Let's go."

"I'll drive," said Mac as he jumped into the driver's side of the red jeep.

"Do you want to tell me where we're going?" Jack asked Mac, but he was not expecting an answer. Mac was staring ahead intently; lost in his thoughts.

Several freeways later, Mac pulled of into an LA suburb that probably had a name, but it was so small and so remote that nobody bothered with it. Mac continued to drive turning right and left and right again seemingly at random. Finally, he turned on to a very quiet residential street with rows of condominiums springing up from small, neat lawns.

Parking the jeep, Mac made his way across the street to a four unit condominium. Without thinking he entered the entrance code and pulled open the door. He practically bounded up the stairs with Jack, confused as ever, close on his heels. Jack was still trying to figure out what Mac was hiding out here. A girlfriend? Sure, maybe…but why keep it a secret. Another thought struck Jack – would Mac be hiding a kid? The idea was so crazy that Jack almost laughed out loud…and yet…

Mac had reached the door of one of the two upstairs units and taking a deep breath, knocked. There was a momentary pause and Jack heard rustling behind the door and thought he caught shadows under the door as somebody looked through the peephole. In a moment, the door was flung open and a young woman stood on the threshold. Her hair was a dark honey blonde and her eyes a greyish blue that seemed to change colors with the light. She was almost as tall at Mac, but more slightly built. Jack noticed with appreciation that she still had curves where it mattered although she was quite slender.

Jack's musings were interrupted by a shout of pure joy. "Mac," the young woman cried out and threw herself into his friend's arms. Mac was not his usual shy self and happily and enthusiastically wrapped his arms around the woman swinging her around in the hallway and then burying his face in her hair. The two stood like this for a long moment with their arms around each other and the young woman's face resting on Mac's chest. Finally, Jack felt the need to clear what was becoming an awkward silence and he cleared his throat.

He noticed somewhat guiltily that Mac actually jumped a little and the woman release her embrace. Mac still had his arms around her as he looked over at his partner, his eyes a combination of joy, relief, and what Jack could only call defiance.

"Jack," Mac said struggling to keep his tone entirely conversational, "I'd like you to meet my sister."

What do you think? Did the characters seem authentic? Please review and let me know your thoughts.