Executive Mosaic’s GovCon Index posted its second back-to-back weekly loss this year following three significant drops this week. The index, which tracks the stock performances of 30 major government contractors, declined 0.37% before the weekend to $4,953.15 for a 0.92% week-on-week loss. Wall Street also registered a weekly loss, led by Nasdaq Composite’s -2.4%. The S&P