I'd always giggle at Admiral Marcus' "long range and untraceable" line, which was immediately followed by a hologram showing one of the torpedoes - which are spammed in Starfleet signage.
BUT! Watching the intro, I spotted this on Thomas Harewood's screen, when he emails Marcus just prior to blowing himself up. The torpedoes have cloaking devices, which activate by remote after launch!
It seems Section 31 had the plan to attack Kronos well in place before Khan fled and Kirk gave Marcus the opportunity to action it.
I've said it before, but I don't think there's been another Trek crammed with as much background detail as Into Darkness. A lot of thought went into things which would never be spotted until the home release.
BUT! Watching the intro, I spotted this on Thomas Harewood's screen, when he emails Marcus just prior to blowing himself up. The torpedoes have cloaking devices, which activate by remote after launch!

It seems Section 31 had the plan to attack Kronos well in place before Khan fled and Kirk gave Marcus the opportunity to action it.
I've said it before, but I don't think there's been another Trek crammed with as much background detail as Into Darkness. A lot of thought went into things which would never be spotted until the home release.