No pigs when I was there from 93-99. If nothing else visit the Wichita mountains behind Ft Sill. You will see elk, deer, buffalo and various other game. Do not speed through the park because you will get a ticket. Be prepared to wait for a herd to take it's time moseying across the road.
I know how you feel about your son. Congradulations to both him and his family. Mine finished basic a month ago. (AF) The pride I felt can't be described. His mother and I both retired from active duty AF and I guess he decided to continue the family tradition.