It was a dark, quiet, and eerie night in the U.S military camp. Leon had been doing his usual rounds, checking the perimeter and making sure the base was secure.

Suddenly, he spotted a figure in the distance, moving stealthily towards the base. Leon's heart rate picked up as he silently drew his weapon, keeping his aim steady.

As the figure crept closer, Leon realized it wasn't one of the familiar faces from the base. It was a stranger, an unknown threat from enemy's military. Leon's voice rang out, sharp and commanding.

"Halt! Identify yourself!"