5 hours, 17 minutes, and 47 seconds to go until Major Yoo Si Jin can return to Seoul and become reunited with his family again...
But who's counting?

He sighs deeply while staring at the ceiling to give himself a break from the stack of reports he's trying to leaf through. 

"God, I miss them so much..."
He whispers. 

To appease himself, he fishes his phone out to browse through the Mo Yeon's messages and to look at family photos. 
He scrolls way down hundreds of messages, to the date that he'll never forget...

*Flashback*
The young Special Forces officer reluctantly places his dogtags on Mo Yeon's bedside nightstand, preparing to leave for another mission once again. He feels bad for Mo Yeon every time this happens, especially now because she's been feeling unwell lately. He felt his heart break as she tried to hold her tears back when her husband broke the news.

"It's a safer department store, I promise. It's a bit longer than usual, about 10 weeks, but it's safer, love."

He swore, trying to comfort his wife. Si Jin cannot disclose any more information due to the nature of his job, but he was desperate to provide her some relief. 

Fast forward to about 4 weeks into his mission, as the date on the text message indicated:

You have to come home, Yoo Si Jin. Promise me you will come home.

The message said.  There was no network connection at his location at the time, so he only saw the text after he came back, 6 weeks later, aboard the Korean military jet. His heart sank thinking of what the message from his wife entails, making the wait much more excruciating.

3 painfully slow hours later, the Alpha team lands on the base. Si Jin quickly exits the aircraft in order to head to his commanding officer's office for debriefing.
He can't help but be distracted during the brief meeting,  so relief floods him when the team is dismissed. 

"Dangyeol!"

The rest of the team decide