April 2 
After 40 years in the making, and $1.2 billion spent on it, the OZ designed Jindalee 'over the horizon' defence radar system is now fully operational

It uses 2 radars, one at Longreach and the other at Laverton in WA and operated from the RAAF Base Edinburgh in South OZ

Jindalee's high frequency radar is capable of all weather detection of air and surface targets ..and it can also detect stealth bombers

 April 1 
USA's Chicago Mayor, Richard Daley, authorised a midnight destruction of the "in town" and well known Meigs airfield destroying the runway by digging across it large X's

Meigs Field is well known around the world with aircraft simulator fans - it is the default airfield that is displayed when the popular Microsoft Flight Simulator program starts

The fate of 16 light aircraft that remain on the airport (refer image) is unclear