Antares rocket explosion a technical problem , says Jennifer Johnson - Freese . In addition , government forts and soldiers provided protection Risk of failure is higher with relatively new rockets like these , she says . Using private firms to provide launch services is new for NASA , she says .
Antares rocket explosion a technical problem , says Jennifer Johnson - Freese . Risk of failure is higher with relatively new rockets like these , she says . Using private firms to provide launch services is new for NASA , she says .