`` at ease , soldier , '' he nodded his head once , `` on behalf of the amalgamated research constitution , we are inviting you to take part in our facility to serve our- '' `` with all due respect sir , '' i came in to interrupt , his face grew stern as slight irritability grew evident in his eyes , but it also faded in a split second like it did n't matter at all , `` you do n't need to be so formal .