The Central Provost of Islamic Republic of Iran Army maintains a guard of honour unit called the "Presidential Ceremony Guard". It provides honour guards for the Iranian President and during events of state such as arrival ceremonies for foreign leaders and national holidays. Also known as "DEJAJA", the unit is composed of infantrymen, sailors, and airmen, all of which serve under the command of the army provost. Aside from public duties, the provost also serves as a military police unit for the capital of Tehran.