What is the point of view of this passage? How does this point of view help create suspense for the reader?
Passage
Liana and Coen walked barefoot through the grass to the old oak tree on the edge of the property. They'd been looking forward to this all day. Liana spread a blanket at the foot of the tree and sat down, closing her eyes as she leaned against the tree's trunk. She couldn't remember a time that she had been this exhausted.
Coen watched his sister, choosing to stretch out on the ground. He thought about the long day they'd had, taking care of their mom, but they were glad for the chance to relax and have a little time to themselves. With any luck, they wouldn't be needed for another hour or so and could spend the time chatting and watching the sun set behind the mountain.
As they talked about nothing in particular, neither sibling noticed the umbrella-like hive hanging 15 feet above their heads, nor did the siblings hear the buzzing emerging from its depths. The wasps' nest began to vibrate as Coen turned up the volume on his portable radio.