Halo/Supergirl Crossover Fanfiction. This is my second actual story, others being codexes and stuff, UNSC OPERATIONS: ORESTES LIBERATION was my first. Not much else to say really. TITAN SECURITY is a front for the UNSC to operate on Earth with obvious question about what UNSC stands for, and it is also the manufacturer of nearly all UNSC Operated Infantry Weapons. This is set during the day before the events of Episode 6, Season 1.

DISCLAIMER: I do not own Halo (But I Wish I Did), Supergirl. Bungie/343 Industries/Microsoft Studios, DC Comics, CBS Respectively.

Commander Gordon Collins, TITAN SECURITY Military Contractor, Commander of MR460 Tiger AIFV, Military Airbase/Live Ordnance Training Range, 50 Miles outside National City, Earth, 14:34 hrs, 24th June, 2016/TITAN SECURITY Military Calendar/Military Standard Time.

Situated inside Restricted Airspace and Private Grounds, 50 miles outside of National City is the main hub for all TITAN SECURITY operations within the United States of America. The base itself was attached to an old ex-US Army Live Ordnance Training Range that was sold to the Contractors in 2009. Part of the Contract with NATO was to provide a Quick Reaction Force that defends National City, Mission City and Metropolis. After 3 years of using the base, the Pentagon called upon them to organise the evacuation of the outlying districts of Metropolis after an extra-terrestrial attack. They also secured the crash site of an unidentified vessel that was disabled early on in the battle, however, before their own technicians could properly examine the wreckage, the United States Air Force seized the unknown vessel. However, the Pentagon didn't cut them loose, since the amount of information TITAN's troops knew what it was, the decided to give them control of open desert to construct a purpose-built base.

The base design is revolutionary compared to standard bases built by NATO there nations. The base had 4 5,000 Metre runways with nearly 48,000 Metres of aircraft grade Taxi-Ways and Ramps. The Control tower was 50 metres tall with an extensive RADAR and Sensor arrays with 8 Anti-Air Defence platforms, surrounding buildings had additional Anti-Air Defences to supplement the tower's own. The base perimeter was surrounded with reinforced concrete walls, guard towers and anti-tank fortifications such as the Dragons Teeth. Razor wire that would make a charging Hunter think twice, alongside concealed bunkers containing 385mm Anti-Armour Cannons, smaller bunkers with 95mm Vulcan Rotary Cannons and pits with Surface-Air-Missile and Anti-Aircraft-Artillery emplacements. Patrols consisting of M70 FAV Wolfhounds would circle the perimeter road and keep an eye out for any unwanted guests, human and alien. The horizon of the base was heavily populated with aircraft warehouses that were used to store aircraft on alert. Each one had series of ramps to allow vehicles to move under their own power from the the bunkers below to the surface.

A dozen huge aircraft lifts were capable of dropping into a cavernous hangar. These specific lifts have been built to safely and securely transport 6 F-52/HFB Gurkhas, arranged side by side with one in front of the other. Within the underground hangar were the garages that store the various Ground Vehicles that were employed by TITAN SECURITY, alongside the Armouries containing small-arms and the heavier munitions that were equipped on the vehicles.

To see the US Army UH-60 Pave Hawk approaching the hardpan was an unusual sight for many after being acquainted to the aircraft they have worked on for decades. It was approaching the helipad located nearby the Control Tower, where a few Wolfhounds and maintenance crews were congregating. Whoever it was, they were important to keep them safe, or they were dangerous enough to require an armed escort.

Commander Gordon Collins was sat on the edge of his turret, mounted on the MR460 Tiger Armoured Infantry Fighting Vehicle. Gordon was wearing the standard UNSC Marine armour, including a full head helmet. As his vehicle came to a stop, he jump off the side of the tank, down to meet the US Army General, his aide and security detail in front of him. No doubt they were Special Forces operators, not that they'd be able to do anything. The General walked towards him as he approached. He held his armoured hand out to the General, the identification tag read "Lane" on it. General Lane took the proffered hand and shook it firmly.

"My name is General Sam Lane, US Army Intelligence." said the General, looking impassively at the blue visor, his reflection staring back at him.

"Commander Gordon Collins, 22nd Armoured Division, TITAN SECURITY." replied Gordon, removing his SCANNER-Class helmet showing a young man no more than 26 years old.

"This is my Legal attache," Gesturing to the woman behind him who was coming forwards with a beige US Government folder. "Major Lane, my Daughter."

Handing over the document folder to the Commander, who flipped it open and began reading it. Not that it was necessary with the Major explaining it.

"Over the next few days, the US Army Intelligence will be operating on this range, conducting tests with experimental weaponry." she stated, "Supergirl will be assisting our tests."

"Supergirl and experimental weapons testing. Sounds like the D.E.O is involved." the General and Major visibly shifted at the mention of the D.E.O. "Well it'll have to be somewhere else I'm afraid."

"That wasn't a question, that was an order." replied General Lane, taking the folder but handing it off to a guard.

"Well sorry. We have an enormous live fire exercise tomorrow." replied Commander Collins, "You're welcome to watch, but I can offer front row seats to the occasion."

"I'm not here to play games with you." said General Lane, disdain evident in his voice.

"And how do you know about the D.E.O?" the Major asked, "That's classified beyond your contract."

"Oh, I beg to differ." chuckled Commander Collins, smiling at their discomfort again. "Securing that Kryptonian Scout Vessel 3 years ago in Metropolis. That's why we have this base here. To shield the D.E.O's operations with our own."

"Right." Turning around to his daughter and guards, effectively saying his intentions and walking back to the US Army Pave Hawk. Returning his SCANNER-Class helmet to his head, he gazed beyond the Pave Hawk and saw 3 F-52/HSFs warming up on the ramp 100 metres away. Noticing the occupants of the helicopter peered out of the windows to witness the Heavy Supremacy Fighters lift off. The downforce of the 4 engine nacelles created enough downforce to lift 120 tons of cannons, missiles and armoured superstructure. All 3 aircraft proceeded to rise to 50ft and began to feed power into the engines, then the Fighters rocketed away and climbed into the air continuing TITAN's policy on Combat Air Patrols. The UH-60 Pave Hawk proceeded to take off afterwards and flew back towards National City.

Commander Collins silently stood and watched the Pave Hawk pass overhead, whilst the Base Anti-Air Defences tracked it beyond the perimeter fence. Walking back to his 8-Wheeled AIFV, and scaling the the armour cage to the open hatch on the turret. "Let's go back to the motor pool." ordered Collins. The Tiger's engine roared again and with the Wolfhounds, the column of vehicles poured power into the wheels and moved back to the motor pool.

A/N: First Chapter completed, not too shabby if I say so myself, good amount of references to the rest of DC and co. TITAN SECURITY as said before is not what it seems because of being the UNSC. The orbital vessels will NOT be used every time there is an issue, but I do have a point that the D.E.O begins to ask the questions of where ODST's came from. Heavy Frigates (Detailed in my UNSC Codex) and Cruisers will be the common ships in orbit, but cannot do anything since the D.E.O would definitely detect a MAC Round discharge.

Have a nice day,

SmokeTinyTom.