The scene opens up in the Yucatan Jungle, in Mexico. As the Chimera were everywhere and the Mexican Army were fighting the Chimera, but were losing in the Jungles, thanks to swarms of Crawlers coming out of holes in trees made by the Chimera. As the SRPA was called in.

Some SRPA troops were seen digging foxholes and some were used as Machine Gun nests, and a command post was set up. And they were next to a river, then Mathison was seen sleeping inside his foxhole as M4 passes by.

M4: Agh, get off me you damn mosquito.

Meanwhile, an SRPA Scout was spotted by the Chimera as two Hybrids went after him, as he got down, trying to crawl to the post, until a Rattlesnake came to him and tries attacking him.

Black Ops Scout: *Quietly* F**k off you stupid snake!

The Scout gets his finger bitten as he tries stabbing the snake and then the knife missed and he got his hand bitten and he got the snake off, but one of the Hybrids killed him, as he did this with his last bits of life.

SRPA Scout: F**k... You...

Everyone was alerted when they heard a Bullseye go off as they saw a Hybrid and everyone fires at it but they all failed but everyone was vigilant as Mathison was operating an M240L.

Echo Team were in their foxhole as M4, SOP2 and AR-15 were aiming at the Jungle, including M16 and RO. Then Hybrids, Steelheads, Longlegs, and Ravagers appeared and everyone opened fire on the incoming wave of Chimera. Everyone fires relentlessly into the night and some of the SRPA Black Ops who were great great grandsons of their great great grandfathers who fought in the Pacific Theater, were doing what their grandfathers did but with the Chimera replacing the Japanese in WW2. 

AR-15: KEEP THOSE F**KERS DOWN!

M4: OH S**T, STEELHEADS!

SOP2: GOT THE BASTARD!

Black Ops Soldier #1: FRIENDLY DOWN!

Black Ops Soldier #2: NAIL THAT BASTARD!

Black Ops Soldier #3: I'M OUT, COVER ME!

Mathison: 240'S OUT, I'M RELOADING!

They all relentlessly keep firing until no more Chimera came out.

Matt: CEASE FIRE! CEASE FIRE!

M4: CEASE FIRE, NOW!

They had all used a lot of weapons, from Pistols, Assault Rifles, Machine Guns, Shotguns, Submachine Guns, Sniper Rifles, and many more, as everyone slept in their foxholes and tents as the daytime comes in and over 27,000 Military Chimera had been killed. This part of the Yucatan Jungle was called as the "Chimeran Blood River." 10 wounded Humans and T-Dolls were the only casualties.