a) C, Ku and Ka-band VSAT terminals via geostationary satellite, to earth station anywhere else in the same hemisphere. Example: 1.2m VSAT in CA, teleport in TX.
There are all sorts of mobile VSAT systems including auto-aim/auto tracking antennas and military grade ones that will fit into a large backpack.
b) Handheld satellite phones: Iridium phones will work fine after a huge clusterfuck disaster. And run on a lot less power than a ham radio rig. They use a LEO satellite network. The Inmarsat iSatphone talks to the I-4 series of geostationary satellites and will work fine.
c) Portable L and S-band laptop sized Inmarsat terminals (BGAN), again speaking to the I-4 series satellites. These are about the size of a fat laptop and also require a lot less power than a ham radio setup. Speeds from 100 to 500 kbps depending on spot beam capacity/utilization and TDMA contention ratio. Some have built in wifi hotspots, others have a 100BaseTX interface to plug in your own router.
You can do all sorts of useful VoIP tricks with Iridium and Inmarsat satellite phones - both services offer regular US NPA DIDs that ring on your phone, and it's easy to set up a phone with a short 50 ohm coaxial cable to an exterior roof antenna if you need to semi-permanently install one on the desk of an indoor command center/disaster relief comms post.
edit: The major use of geostationary satellite in a disaster is to repair and bring back online a broken/islanded TCP/IP network. You can show up to a completely off-net command center (for example: Disaster operations HQ for City of San Francisco) and bring it back online to the outside world by parking a 1 to 2 meter sized VSAT dish on the roof and connecting a satellite modem to the WAN uplink of their router. Satellite serves a different and complementary purpose to ham radio which is almost purely analog voice in a disaster scenario. Two people can carry the equipment needed to bring a 5 Mbps x 5 Mbps pipe with 0.0% packet loss.