AV camper Mason O’Shields runs a test (IMAGE) DOE/Argonne National Laboratory Caption AV camper Mason O’Shields runs a test on a key component of his team’s machine. Credit (Image by Argonne Institutional Partnerships.) Usage Restrictions Original content License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.