What can I expect if my spouse's 1-30 CR-1 is being processed at the Vermont Service Center, my step-son's K-3 is being processed in Nebraska Service Center, and my step-daughter's K-3 is being processed in the Texas Service Center? All of the petitions are tied together with each other through petition reference, but I am curious how the USCIS processes spouses with minor children when the petitions are scattered all over the country and have similar but different processing times?