Where is the O2 sensor on a 93 honda accord?

I want to replace my Upstream O2 sensor on my 194 Honda Accord EX but i cant find where it is. Its not sticking striaght out of the heat shield like other hondas, so where is it? Please try and post a picture or tell me where i can find one. THANKS

The O2 sensor is located in front of the flex pipe to the catalytic converter.