Are "Veteran" and "LEO" checkbox values for the same field or different fields?
One field or two, they should be defined in the contacts table so that any related record in Registration can also show the values.
If so, just copy and paste this field or fields from your contacts layout to your attendees layout and you should see the boxes are checked like you want. If the other two values are for the same field and you don't want them to appear on your attendees layout, define a new value list for this copy of the field that only has the LEO and Veteran values. That'll hide the other two values from view on this list.