His children look like they are enjoying themselves and the guests as well. Magnus is mostly keeping to himself during the party. He isn't feeling socialible, but he does talk to others when protocol demands it.
The focus of his attention is on his children.
He watches them talking to others and moving around the room. He is so intent on observing them he almost misses the low booms that are starting outside. At first it is one single one, but another follows and then another. Each one louder than the previous one.
Magnus knows it's not the fireworks that are planned for later in the evening. The Sapiens are daring to attack.