Sen. Tom Coburn (R-OK) has placed a hold on the nomination of Heidi Shyu to become the Army's acquisition executive, the senator's office has confirmed. At issue are Coburn's concerns over Army efforts to improve “its small-arms weapons while our soldiers are at war,” the senator wrote to Senate Minority Leader Mitch McConnell (R-KY) in a May 29 letter provided to InsideDefense.com by a Coburn spokesman. “For example, I have not seen the Army make sufficient progress on the...