Commodity markets ended the week 'on a bang,' Don Wick said on the Agweek Market Wrap. Randy Martinson of Martinson Ag Risk Management said a combination of factors came into play, including Russian President Vladimir Putin indicating he would not support extending the deal to allow exports out of Ukraine, a sharply lower U.S. dollar, and the expectation that the USDA's export reporting system will be back up next week and will show strong smaller sales.