mayor returns the decoration to the Duma on his or her retirement from office. The Emblem of the Don Host Oblast was introduced in July 5 (18), 1878. The flag of the All Great Don Army was introduce in May 1918 on the "Circle of the Don Saving". Awards December 1970: Order of Lenin 1982: Order of the Great Patriotic War 1st class 2008: City of Military Glory status Economy Overview Rostov's favourable geographical position at trading crossroads promotes economic development. The Don River is a major shipping lane connecting southwestern Russia with the north. Rostov-on-Don is a trading port for Russian, Italian, Greek and Turkish merchants selling, for example, wool, wheat and oil. It is also an important river port for passengers. The Rostov-on-Don agricultural region produces one-third of Russia's vegetable oil from sunflowers. Volga–Don Canal With the construction of the Volga-Don Shipping Canal in 1952, Rostov-on-Don has become known as a "port of five seas" (reachable from the Black Sea, the Sea of Azov, the Caspian Sea, the White Sea, and the Baltic Sea). See the article Port of Rostov-on-Don Modern industry In modern times, Rostov-on-Don has experienced economic growth. Numerous start-up companies have established headquarters in the city, the median income is increasing, and the city is being transformed into a modern, industrial and technology-rich hub. For instance, Rostov-on-Don is a center for helicopter and farm machinery manufacturing. The "Tebodin" engineering company opened its fourth office in Rostov-on-Don in June 2010. Transportation Public transport in Rostov-on-Don includes buses, trolleybuses, trams, and marshrutkas (routed minibus, usually a 17-passenger Mercedes Sprinter). The Rostov Metro was planned in the early 90s and later in 2000s and 2010s. At the end of 2021, the Government of the Rostov Region and the Sinara company signed an agreement on the creation of a high-speed tramway in Rostov-on-Don on a concession basis. This happened at the international forum Transport Week 2021 in Moscow. By signing this agreement, the regional government put an end to the idea of developing the metro in the city in favour of the tram. The Rostov-on-Don Airport caters for domestic travel, as well as flights to and from the former C.I.S., Europe, Africa and Asia. Its IATA code is "ROV". Donavia airlines (formerly "Aeroflot Don") has its head office in Rostov-on-Don. The Bataysk military aerodrome (which is located northwest of the city center) may be developed into a new airport