HOUSTON -- Emergency plans for the Astroworld music festival did not include protocols for dangerous crowd surges like the one that unfolded during a rush to see headliner Travis Scott, which left eight people dead and injured hundreds of others, including a 9-year-old boy whose family said was in a coma.The concert area in Houston where a crush of fans had pressed forward during the rapper's Friday night performance remains largely in place as authorities continue a criminal investigation.