Jammertest: Arctic exercise to counter satellite jammingDefence and tech companies have been taking part in annual exercises in Norway aimed at countering the threat against satellite signal jamming, which can affect everything from aircraft and ships to financial markets. Paul Rhys explains from Norway.Video Duration 00 minutes 35 seconds 00:35Video Duration 02 minutes 35 seconds 02:35Video Duration 02 minutes 53 seconds 02:53Video Duration 01 minutes 27 seconds 01:27Video Duration 00 minutes 22 seconds 00:22Video Duration 01 minutes 38 seconds 01:38Video Duration 01 minutes 14 seconds 01:14