Caitlyn Bobb and Nathan Armstrong continued to step up their preparations for the upcoming Carifta Games at the weekend.Bobb competed in the Warrior Invitational at Hagerstown Community College in Maryland and won the 500 metres in a time of 1min 16.77sec.Meanwhile, Armstrong was in action the Paul Schwartz Invitational at the Fairleigh Dickinson’s Rothman Centre in Hackensack, New Jersey.Competing in the distance medley race relay and the 100, Armstrong’s team dropped the baton, but the Bermudian still ran the fastest 1,600 split of the day in 4.32.He then finished second in the 1,000 in 2:41. “These events are great preparation for Nathan as he moves to the under-20 age group, possibly competing in the 1,500 and 5,000 [at the Carifta Games],” Donna Raynor, the Bermuda National Athletics Association president, said.The Carifta Games will be held at the National Stadium from April 10 to 13.