General view of US army M-SHORAD Stryker Air Defence vehicle on March 1, 2022 in Kazlu Ruda, Lithuania.
CNN  — 

The US is set to finalize a huge military aid package for Ukraine totaling approximately $2.5 billion worth of weaponry, including for the first time Stryker combat vehicles, two sources briefed on the next tranche of aid told CNN.

The package is not yet finalized, one of sources said, but it could come before the end of the week.

The new aid – one of the biggest packages to be announced since the war began last February – would also include more armored Bradley Fighting Vehicles, according to one of the people briefed. Combined with the Strykers, it marks a significant escalation in the armored vehicles the US has committed to Ukraine in its fight against Russia. Mine-resistant ambush protected vehicles, known as MRAPs, are also on the list, the person said. The US has already committed to sending Ukraine nearly 500 MRAPs.

When asked if the US was preparing to announce another Ukraine security package, State Department spokesman Ned Price told CNN, “Two words: stay tuned.”

Stryker vehicles are armored vehicles capable of moving infantry across a battlefield. They are both lighter and faster than Bradley infantry fighting vehicles, which the Pentagon announced it is sending