He blinked as Libby cast him aside like he didn't matter... and for a child of Poseidon, too!  He watched as she ran off from him, his sword's blade falling to the ground as he gritted his teeth.  He didn't know what Zac was going through and frankly, he didn't give a damn at the moment.  He shot a look of pure malice in the son of Poseidon's direction, his face darkening as his emotions took over.  That's when the ground began to shake... building up to a violent crescendo as small pebbles began to rise several inches off the ground around Libby and Zac.  Jason blinked again, wondering where the sudden earthquake had come from.  He stepped back, the tip of his sword's blade dragging along the ground.  Then, as quickly as it had began, the tremors stopped... leaving quite a few campers on their behinds, some of them beginning to chatter about what had just happened.  Jason cast another look at Libby and Zac before snorting and turning, lifting his sword up and sheathing the blade as he walked off the training field.  'Zac needs me'... yeah.  He moved away, to try and find Chiron and ask what had happened.