Brennan/Booth Moments 5.16

Booth spent the whole drive to Brennan's apartment wondering what had happened, though it wasn't a long one. He tried to stay optimistic, but he wasn't. What had happened? Why hadn't she answered? Was there another explanation that didn't have to do with her being in danger?
On the way there he skipped various traffic-lights and when he got to Brennan's apartment’s building he didn't even bother to park. But before he got to the bottom of the building's stairs, he breathed as he found Brennan running down them. She practically fell into his arms. Even given the circumstances, he couldn't...