Question: Dobi-III is the third and the last aircraft designed by Lithuanian aviator Jurgis Dobkevičius, on June 8, 1926 it crashed, killing its designer, at which International Airport, is the  second-busiest civil airport in Lithuania after Vilnius Airport and the fourth-busiest in the Baltic states?

Context paragraphs:
Dobi-II: The Dobi-II is the second airplane designed by Lithuanian aviator Jurgis Dobkevičius in 1922.  It was tested in October 1923.  After two landing accidents plans for mass production of Dobi-II were abandoned.

Dobi-III: Dobi-III is the third and the last aircraft designed by Lithuanian aviator Jurgis Dobkevičius.  Fighter Dobi-III was designed and tested in 1924.  On June 8, 1926 it crashed at Kaunas Aerodrome killing its designer.

Lithuania: Lithuania ( , Lithuanian: "Lietuva" ] ), officially the Republic of Lithuania (Lithuanian: "Lietuvos Respublika" ), is a country in the Baltic region of northern-eastern Europe.  One of the three Baltic states, it is situated along the southeastern shore of the Baltic Sea, to the east of Sweden and Denmark.  It is bordered by Latvia to the north, Belarus to the east and south, Poland to the south, and Kaliningrad Oblast (a Russian exclave) to the southwest.  Lithuania has an estimated population of 2.8 million people as of 2017 , and its capital and largest city is Vilnius.  Lithuanians are a Baltic people.  The official language, Lithuanian, along with Latvian, is one of only two living languages in the Baltic branch of the Indo-European language family.

Vilnius Airport: Vilnius Airport (IATA: VNO, ICAO: EYVI) (Lithuanian: "Vilniaus oro uostas" ) is the international airport of Vilnius, the capital of Lithuania.  It is located 5.9 km south of the city.  It is the largest of the four commercial airports in Lithuania by passenger traffic.  Today, Vilnius Airport is one of the fastest-growing airports in Europe.  With one runway and about 3.8 million passengers a year, Vilnius International Airport serves as a base for Ryanair, Wizz Air and Small Planet Airlines.

Dobi-I: The Dobi-I was designed by Lithuanian aviator Jurgis Dobkevičius and the first airplane of Lithuanian design.  Jurgis Dobkevičius started designing and building Dobi-I in 1921, and it was first tested by its designer in July 1922.  The single Dobi-I prototype was damaged beyond repair in an accident on 1 December 1925.

Jurgis Dobkevičius: Jurgis Dobkevičius (born March 23, 1900 in Saint Petersburg, died testing his own construction airplane Dobi-III in a crash June 8, 1926 in Kaunas) was a Lithuanian aviator and aircraft designer

Vilnius Airport railway station: Vilnius Airport Railway Station is a railway station in Vilnius International Airport, Lithuania, which was opened on 2 October 2008.  As for 2017, railbuses running between Vilnius airport and Vilnius central station being the only passenger service of the station are the fastest (8 minutes) and the cheapest (66 eurocents) way to go from the airport to the city centre, but there are only 16 trains during the day with intervals from 35 minutes to 2 hours 15 minutes.  Vilnius airport is the only airport in the Baltic states to have a direct rail connection with the city center.

Kaunas Airport: Kaunas International Airport (Lithuanian: "Kauno tarptautinis oro uostas" ), (IATA: KUN, ICAO: EYKA) is the second-busiest civil airport in Lithuania after Vilnius Airport and the fourth-busiest in the Baltic states.  The airport is located in the central part of the country, 14 km northeast of the Kaunas city centre and 100 km west from the capital Vilnius.

AirBaltic: airBaltic, legally incorporated as AS Air Baltic Corporation, is a state-owned Latvian low-cost carrier and the country's flag carrier, with its head office on the grounds of Riga International Airport in Mārupe municipality near Riga.  Its main hub is at Riga International Airport with further bases at Tallinn Airport and Vilnius Airport.

Occupation of the Baltic states: The occupation of the Baltic states was the military occupation of the three Baltic states—Estonia, Latvia and Lithuania—by the Soviet Union under the auspices of the Molotov–Ribbentrop Pact on 14 June 1940 followed by their incorporation into the USSR as constituent republics, unrecognised by most Western powers.  On 22 June 1941 Nazi Germany attacked the USSR and within weeks occupied the Baltic territories.  In July 1941, the Baltic territory was incorporated into the "Reichskommissariat Ostland" of the Third Reich.  As a result of the Baltic Offensive of 1944, the Soviet Union recaptured most of the Baltic states and trapped the remaining German forces in the Courland pocket until their formal surrender in May 1945.  The Soviet "annexation occupation" ("Annexionsbesetzung " or occupation "sui generis") of the Baltic states lasted until August 1991, when the Baltic states regained independence.

Supporting paragraphs: Dobi-III Kaunas Airport
Answer: Kaunas Aerodrome