I was 'secure in the belief/knowledge' that I had done all I could. [=I felt confident because I believed/knew that I had done all I could]
They are 'financially secure'. [=they have enough money to live on; they do not have to worry about money]
You can access your bank account online using a 'secure' [='secret'] password.
(..) And, what are these colored dots that we're seeing here general? These are our assets on the ground. In green we got the "EDs" They're the big boys. They secure the perimeter. Purple are the smaller "EM s" They sweep and mop up. And the red dots Pat that's your film crew. It's great to see (..)2014 RoboCop