Readying aircraft and air-defence assets for ACE 21. Arctic Challenge is one of the major exercises or the year for NATO, so there's going to be some great photos over the next two months.
Danish F-16. We can expect aircraft from the US, UK, France, Germany, Norway, Finland, Sweden, the Netherlands and a host of other European nations to be present during ACE 21.
NASAMS battery. Many participating nations not only bring aircraft and support crews, but air-defence guns, missiles and electronic warfare suites making ACE 21 the premier air-defence exercise on European soil.