United prior to this order had 8 widebodies on order. They need to replace 90 plus widebodies that are getting old. This is primarily a replacement order with little growth. The options on the other hand would be growth aircraft if exercised. The additional 737’s are 100% growth. They plan to hit the domestic markets hard. What that does to yields remains to be seen. They add 130 plus narrow bodies next year and this order keeps the narrow bodies coming fast and furious!