A biological agent detection system for detecting a biological agent in an air sample comprising: a first collection device; and a second collection device, characterised in that: the first collection device operates in a sample collection mode when the second collection device operates in a sample analysis mode and the first collection device operates in the sample analysis mode when the second collection device operates in the sample collection mode; and the system further comprises: a bio-concentrator that concentrates the air sample to an aerosol sample, wherein the bio-concentrator is shared by the first collection device and the second collection device; and a turntable having a hole, wherein the turntable is configured to move the bio-concentrator between a first position wherein the hole aligns with the first collection device to direct the aerosol sample to the first collection device and a second position wherein the hole aligns with the second collection device to direct the aerosol sample to the second collection device, wherein each of the first collection device and the second collection device includes an inlet tube, a pyrotube and a heater, and the inlet tube draws the aerosol sample into the pyrotube during the sample collection mode and the heater heats an aerosol sample in the pyrotube during the sample analysis mode, and each of the first collection device and the second collection device includes a heated sample line that transports the aerosol sample to a chemical analysis device for analysis during the sample analysis mode. a first collection device; and a second collection device, the first collection device operates in a sample collection mode when the second collection device operates in a sample analysis mode and the first collection device operates in the sample analysis mode when the second collection device operates in the sample collection mode; and the system further comprises: a bio-concentrator that concentrates the air sample to an aerosol sample, wherein the bio-concentrator is shared by the first collection device and the second collection device; and a turntable having a hole, wherein the turntable is configured to move the bio-concentrator between a first position wherein the hole aligns with the first collection device to direct the aerosol sample to the first collection device and a second position wherein the hole aligns with the second collection device to direct the aerosol sample to the second collection device, wherein each of the first collection device and the second collection device includes an inlet tube, a pyrotube and a heater, and the inlet tube draws the aerosol sample into the pyrotube during the sample collection mode and the heater heats an aerosol sample in the pyrotube during the sample analysis mode, and each of the first collection device and the second collection device includes a heated sample line that transports the aerosol sample to a chemical analysis device for analysis during the sample analysis mode. a bio-concentrator that concentrates the air sample to an aerosol sample, wherein the bio-concentrator is shared by the first collection device and the second collection device; and a turntable having a hole, wherein the turntable is configured to move the bio-concentrator between a first position wherein the hole aligns with the first collection device to direct the aerosol sample to the first collection device and a second position wherein the hole aligns with the second collection device to direct the aerosol sample to the second collection device, wherein each of the first collection device and the second collection device includes an inlet tube, a pyrotube and a heater, and the inlet tube draws the aerosol sample into the pyrotube during the sample collection mode and the heater heats an aerosol sample in the pyrotube during the sample analysis mode, and each of the first collection device and the second collection device includes a heated sample line that transports the aerosol sample to a chemical analysis device for analysis during the sample analysis mode.