However, avoidance behaviour is reinforced through negative reinforcement. The vehicles were reinforced with steel and aramid. The tower has seismic proofing, including a central shaft made of reinforced concrete. There are numerous seastead designs based around interlocking modules made of reinforced concrete. It is not reinforced by concrete. They are reinforced with rebar and are often prestressed. The roof is reinforced with titanium armor. The behavior "has been reinforced (i.e. strengthened)". Polysulfone can be reinforced with glass fibers. Meanwhile, the government building was reinforced with barbed wire. Polymers are common matrices (especially used for fibre reinforced plastics). These thoughts can then be reinforced by supportive social connections. These towers were often reinforced and enlarged with battlements. After Isandlwana, the British field army was heavily reinforced and again invaded Zululand. However, these strategies must be reinforced with credible evidence.