The signal crackles across the EM spectrum, as loud as a shout but considerably better organized. The UNSC distress protocols in the header grab Cortana's attention in the digital equivalent of an adrenaline rush, even a Gamma-level priority like a friendly mayday triggering her directives in a split second of deep-seated command before she slaps those troubling remnants of her loyalty programming back down to a murmur where they belong and she can think rather than react.

In a sea of radio interference and hallucination, why is this coming through so clearly?

"Sombra, distress call from Delta. York's in trouble." Regardless of how honest the call for help may be, it's certainly factual regardless--they're all in trouble. "The protocols all check out, but I think it's a trap."