SVG Group Animation - SVG Image Slider

Question

I'm creating a masked vertical image slider using svg and I ran into a bit of a snafu. I'm wrapping three images in a group like so:

<g>
<image></image>
<image></image>
<image></image>
</g>

And I need to animate them all at the same time. I can't animate the y of the group.

Is there a way to combine all three images into one element and animate the element up/down?

I've included snap.svg and am using it for other animations on the site.