From the release:
As we release more supplements for our Bolt Action WWII game system, we are actively reorganising some of our sets to reflect the needs of the relevant army list entries. This way you know that you’ll have exactly what you need to field.
The first of the revisions are the 30 Cal and 50 Cal teams for the US Army – both of which now come with an extra crew member. You can see both of our 30 Cal teams below and the 50 Cal team here.