They are under NECC along with MDSU's, Seabees, the Mobile Security Squadron fags (MA's that think they're SOF), and the Riverine Squadron fags (QM's, EN's, GM's... that think they're SOF).
EOD and Seabee brass pretty much run the NECC. Why? Because being Expeditionary is what we've always been about before all this "Squadron" stuff. The Squadrons remind me of a fly by night operation, no history, no future. They are cobbled together and have no history or specialized Officer staff, just SWO's that took some orders. These EOD guys and CEC officers have more of a grasp on the happenings in the austere environment in which they operate.
As a Seabee I am glad they are at the tip of the spoon which is the NECC because however hardworking and selfless Seabee's are, it's CEC (Civil Engineer Corps) Officer's are, after all, engineers by trade and they have been known to be complete tools.