For decades, most people around the world that have heard of Area 51 believed that it was a military base established for secret aircraft development and U.F.O. research. That was just a cover story to deceive people from finding out what the real purpose of the base was. Actually, Area 51 was built as a facility for weaponized animal research and development.
After successfully deterring the press and general public about it's actual operations a lone scientist was commissioned to begin research on making animals into effective weapons to use against the military forces across the world. A team was assembled for the scientist to work with and the Weaponized Animal Division (W.A.D.) at Area 51 was created. At first the team basically just dropped animals out of bombers onto its enemies. This didn't seem to work very well because the animals refused to pull their rip cords and basically became small bombs that wouldn't effectively explode once they hit the ground. This only served to anger their enemies without slowing them down.
The next step was to fire animals out of large cannons, this also was deemed ineffective by the W.A.D. and was abandoned. Finally as technology evolved and DNA coding was discovered the scientist and his team found a way to introduce certain proteins into the animals while they were in an embryonic state that would cause certain changes in both the DNA and the behavior of the animals.
After years of testing and re-testing several different types of DNA alterations the W.A.D. finally came up with a systematic process to make the animals both intelligent and enhance their physical strength. At this point the Siege Cats were developed.
Now the W.A.D. had finally found a successful way to develop weaponized animals that could be self reliant in the field, use radios to report back to base any information they found and even attack enemy installments without even being detected. Most enemy bases would take the animals in and feed them as they gathered important information about the size of the enemy forces, available weapons and technology and any top secret information that the military could use to launch successful campaigns against their enemies. Funding was increased for the W.A.D. and the team that worked for the lone scientist became very wealthy, but they could never tell anyone what they knew. Not even their closest family members. This bothered the scientist that had worked so hard to create such perfect weapons. He couldn't even take credit for his brilliant efforts and successes.
One day the scientist went to work. It was a day like any other day but on this day while doing some paperwork he heard one of the Siege Cats singing in his cage. He went to see what was going on and asked the Siege Cat how he learned to sing so badly. The cat replied "You made us very smart and some of us like to play music and sing". The scientist knew that it was better than fighting enemies and had an idea of how he could escape the W.A.D. and give his siege cats a new life doing what they loved to do best. The scientist also knew that he could capitalize on their talents and make enough money to take care of his lovely Siege Cats and stay one step ahead of the W.A.D., because he knew if they did indeed get away that the W.A.D. would be in hot pursuit until they recovered what they considered to be the perfect weapons. The scientist didn't want to fight and neither did the Siege Cats so they agreed to escape the W.A.D. and start a new life as a metal band making music for all of their fans