Eurocopter EC135 T2 of Czech police June 8 2017 16:52 flying from Praha-Ruzyně to Prague center.
Photo taken from Divoka Sarka https://steemit.com/photography/@valtr/divoka-sarka-a-huge-nature-reserve-in-prague
Pentax K50 f 11; 1/500 sec; ISO 400; lens zoom 4,5-6,3/55-300 mm