"In a month and a half, we created a project from scratch and made a shield from Metinvest's Ukrainian armor steel for the Patriot air defense system crew, which guarantees protection against debris damage to both the defenders and the air defense control center," said Oleksandr Myronenko, a COO of Metinvest Group.
The short explanation is they’re needed for the defense of the countries they’re in. The long explanation is several pages of why.