Halo: The Fall of Reach, Invasion, Issue 2, by Marvel Comics
John and Cortana as they successfully pass Colonel Ackerson's
field test. As an act of revenge for having tried to kill her and John,
Cortana has Ackerson transferred to the front lines. All focus is then
switched to Operation: RED FLAG, a secret mission that involves the Spartan-IIs seizing a Covenant vessel in hopes of capturing a Covenant Hierarch. However, the mission is interrupted when the Covenant fleet begins attacking Reach. The Covenant land troops on Reach with the objective of destroying the generators for the Super MACs. At the same time, Cortana reveals that the UNSC prowler Circumference, is still docked in Reach Station Gamma and has not initiated the Cole Protocol. John takes Linda-058 and James-005 to deal with the Circumference, while the rest of the Spartans led by Frederic-104 are sent down to the planet to defend the MACs' power generators.
