PacketHop and Xybernaut announced this week they would jointly develop a mobile wireless broadband product line that incorporates PacketHop’s mobile mesh networking software into Xypernaut’s line of wearable computers. The solutions will be targeted to first responders and homeland security personnel, currently an $11 billion market, the companies said. The first products are scheduled for availability in fourth quarter 2004. PacketHop and Xybernaut previously worked together on a field test of a mobile mesh network conducted in February by the Golden Gate Safety Network, a coalition of 11 government organizations in the San Francisco Bay area.