In Rookies search for his fellow ODSTs, he stumbles across a unexpected all

The UEG and Swords of Sanghelios are strong, but not as strong as days past. 10 years after the war, hostilities still haven't simmered down between Sangheili and Humanity. They probably never will. But despite this, a dangerous threat looms on the horizon. A threat that necessitates cooperation, or all will be lost to a dark foe. And the UNSC knows just the guy for the job.