Airbus and Vietnamese air carrier Vietjet have announced a deal for 30 new aircraft at the Dubai Airshow likely worth over $3 billion.

The two companies announced the deal for nine new A321ceos and 21 new A321neos on Tuesday.

There were no terms for the deal discussed, though the retail list price of the aircraft is easily over $3 billion. However, airlines and manufacturers typically negotiate discounts on such deals.

The deal came on the third day of the biennial Dubai Airshow, which has seen the event shift in focus from civil aviation to defense spending. On Monday, the United Arab Emirates announced a $1.27 billion deal for upgraded Saab surveillance systems aboard newly acquired Bombardier aircraft.