It's a super busy morning for the US economy -- here's what you need to know

Happy Friday! It's a super busy morning for the US economy — here's what you need to know: The second estimate for US GDP growth in the fourth quarter will cross the tape at 8:30 a.m. ET.  Expectations are the pace of growth in the final quarter of 2015 will be revised down to 0.4% from 0.7%.  Personal consumption in the fourth quarter of 2015 is expected to remain steady at 2.2%.  Personal income and spending will cross the tape at 10:00 a.m. ET and is expected to show a 0.4% increase in i...