The source document states:

$($S$)$ The exercise will begin on $4$ May and end on $25$ May

$($U$)$ Elements of this unit will participate in the exercise

$($U$)$ Unit members participating will be Barkley and James

The Security Classification Guide $($SCG$)$ states:

$($U$)$ The unit will participate in the exercise

$($S$)$ The exercise dates

$($U$)$ Participating members of the unit

The new document states:

The exercise will begin $4$ May and end on $25$ May.

What is the classification of the new document?