Olivia had made a vow to spend less time working and more time with her son Noah and so a bbq seemed like the best place to do that. Since it was Gibbs to plan the thing she worried just what kind of food and drink would be there as he was a pretty one-dimensional man when it came to food and drink so Olivia made sure to bring something along. She let Noah choose something to bring and he chose soda. While that wasn't something she let him drink often, but it was a day of fun so she gave in. With the soda, she also brought with her some wine and lastly brought a pasta salad and some meat to grill in case there wasn't enough.
When she arrived she noticed Gibbs talking to some people and a young woman sitting off to the side, but not many other people had arrived yet. Once she set everything down on one of the tables, Olivia made her way over to Gibbs to say hello.