User blog comment:Admiral Mikado/Extra Operations for Dummies: 2-5/@comment-26874235-20160104003717/@comment-232062-20160104060558

Your ships and gear are weak.

I whipped together a fleet of my lowest LoS/ lowest level K2s and can still pass the check. Aircraft proficency makes the Bm7 LoS check easy. Proficency adds an unknown amount of LoS so you don't even need to hit the 70.4 mark, though personally I haven't tried with anything lower than 65. You don't need Ooyodo or Akatsuki or any other high base LoS ship, just decent gear.