Some of the new weapons the United States is transferring to Ukraine will require training for the Ukrainian military, U.S. Department of Defense spokesperson John Kirby said during a briefing on April 13.
Specifically, the Ukrainian military would need additional training to use howitzers and anti-artillery radar stations the Armed Forces of Ukraine weren't familiar with.
"We're still working our way through what that's going to look like, where, when, how many," he said.
"It's more likely than not that what we would do, because they are in an active fight, is a 'train-the-trainer's' program. So, pull a small number of Ukrainian forces out so that they can get trained on these systems and then send them back in."
Right now, it's unclear where such training might occur, Kirby told reporters, though he said it might happen in "multiple locations."
Additionally, training on these systems by U.S. forces would likely happen with forces already in the region.
Earlier on April 13, U.S. President Joe Biden in a phone call with his Ukrainian counterpart, Volodymyr Zelensky, said that Washington had authorized an additional $800 million in weapons, ammunition, and other security assistance to Ukraine.
"This new package of assistance will contain many of the highly effective weapons systems we have already provided and new capabilities tailored to the wider assault we expect Russia to launch in eastern Ukraine," Biden said.