A Lyzander class drop ship sets down at the Chicxulub landing center. Several soldiers wearing ebony colored armor with golden highlights. Their faces are completed covered by blast shields and dark visors. Once the area is secure two more soldiers descend the ramp ahead of a figure with red combat armor instead of ebony. While the guards are armed the figure is not. With two more flanking guards the person heads into the antechamber.
The person, obviously of some rank, ascends the steps and quietly looks around at the reaction that their entrance has made. Removing the helmet and placing it upon the podium, the figure now identified as female speaks. "People of earth, I have been ordered to report here and brief you on the current situation and to give you a warning. " She moves a few strands of dark brown hair from her eyes, "I am High Admiral Daala of Shadowveil, we have risen from the ashes of the invasion and will not allow such a thing to occur again. "
She looks around at the assembled people, ambassadors and important national officials of important nations. "Secondly, I also present you a warning. Our lands are closed to those of other counties, no one may enter without prior authorization. Anyone discovered within our claimed lands will be terminated until further notice. The land is not peaceful. Heed the warning at your own choice. We will have more to say at a later date. "
After delivering her messages, she picks up her helmet, smartly and gracefully turns and leaves. The four guards escort her out of the building and not to the transport like those might suspect, but to a relitively clear area. It appears the command tent will be setup here and construction of an embassy will take place.
Over the next several days supplies and personnel are delivered and the quick prefab construction of an embassy, more like the beginnings of a small fortress, begins. Things are raised quickly and within a few months a new building and a well defended one is setup.
(Yes, only slightly militaristic
)