Twilight is referring to the incident with The Man Who Can and Hidden Dragon from Oz Magellan on pages 6.84-85 wherein they both went M.I.A.!
Magellan USA is the New York division – Liberator, Twilight, Glom, Maestro, Greyhound and Battlestar were all introduced back on page 2 of Redux. Flambe had her debut during events of Bad Karma in a cameo on page 4.119. We get to see Maestro in action today – he is able to phase through objects but also generates a spatial rift through to a null dimension he refers to as “The Void”. Anything that falls in is lucky to get out!