#19#20 - 'Reservation X Part Two'
#22 - 'Reservation X Conclusion'
#25 - 'Natural Resources Part Two'
#27 - 'Natural Resources: Part Four'
#28 - 'Natural Resources: Utopia United!'
#30 - 'World War X: Part Two'
#31 - 'World War X: Part Three'
#33 - 'World War X'