On April 30 a formal rotation ceremony of air contingents deployed on the NATO Baltic Air Policing Mission will take place at the Lithuanian Air Force Base in Šiauliai. Following a four-month rotation and an augmentation the United States’ Air Contingent will be replaced by Polish military with four Mig-29 fighter jets. Their mission, too, will be strengthened by 4 Eurofighter Typhoon fighter jets contributed by the United Kingdom.