You may wish to reconsider your decision.
A filing was made yesterday, that following the result of the UK EU membership referendum;
“[The] DOT should suspend processing of Norwegian Air UK’s [NAUK] application until the post-exit regulatory structure that will pertain to the grant of operating authorizations to UK carriers is determined”.
In a second filing, relating to Norwegian Air International (NAI):
"For the reasons set forth above, and in our prior pleadings, DOT should reverse its tentative conclusion that NAI should be issued a foreign air carrier permit".
https://www.regulations.gov/document?D=DOT-OST-2015-0261-0025
Additionally, former Deputy DOT Secretary, John Porcari, made a public statement regarding Norwegian’s US permit application;
“NAI is requesting to launch a complex international airline operation that at its core challenges explicit provisions of the agreement [Open Skies], in particular those specifically designed to protect high labor standards for crews on both sides of the Atlantic”.
http://www.huffingtonpost.com/john-d-porcari/setting-the-record-straig_b_10704160.html
“This article [Article 17] unambiguously sets out a clear commitment to protect against air services that “undermine” labor standards and the labor related rights and principles contained in the parties respective laws”.
Norwegian can “return” pilots and cabin crew to their agency employer without notice, reason or recourse. Any notice period is with the agency employer, not Norwegian.
Chickens, home, roost.