After Julianne Moore runs through a grocery store and an alley, she stops in front of white graffiti on a wall. It's the logo of Revolution Studios, which produced the movie.
Julianne Moore also plays a mother who lost her son in Freedomland (2006) and Children of Men (2006)
One of the NSA agents' name is Al Petalis. Petalis is Latin for petal (as in flower petal). Rose petals are traditionally a symbol for love and devotion and can also be a symbol of motherhood -- the two main themes of the movie.