Explosion and Breaking Into the Base
For those inside the base who had seen the sack fly out of the portal, it was as if time stopped for a mere instant. They stared at the sack which was airborne and how something started shining inside of it, and then, it activated.
The sack contained powerful explosives, specially designed by the engineers of Doncaster to cause maximum damage to the enemy base. As it flew through the portal and entered the enemy base, the explosive detonated, sending shockwaves through the base and causing an immense explosion to take place.
Inside the enemy base, chaos erupted as the explosion rocked the central building. Guards were thrown off their feet, and some of the arrays present in the base which were supposed to help them fight off any intruders were disrupted, unable to function properly amidst the chaos.