Olympic fan on venue delays: Improve 'their security or start praying.'

Just a few hundred yards from the site of the opening ceremonies of the 2016 Rio Olympics, Mangueira residents gathered on a roof to watch the fireworks.Time_Sports

(Photo: Jack Gruber, USA TODAY Sports)RIO DE JANEIRO -- After waiting to enter the Olympic Park on Saturday, Gerardo Hendlin has some advice for Olympic organizers.

"They either need to improve their security or start praying," said Hendlin, 62, a tour operator from Argentina.

The first day of full competition at the Games was mired by complaints over security that was either too intense or too lax. Rio 2016 Organizing Committee spokesman Mario Andrada said visitors were stuck in line for up to one and a half hours Saturday morning…